diff --git a/benches/bench_codegen.py b/benches/bench_codegen.py
index 02142bfd..15e29cfc 100644
--- a/benches/bench_codegen.py
+++ b/benches/bench_codegen.py
@@ -2,7 +2,8 @@ import datetime
 import io
 import struct
 import timeit
-from typing import Any, Iterator
+from collections.abc import Iterator
+from typing import Any
 
 from .data_codegen import DATA, Obj
 
diff --git a/client/build_backend/backend.py b/client/build_backend/backend.py
index 718c42ee..6bbaf8d3 100644
--- a/client/build_backend/backend.py
+++ b/client/build_backend/backend.py
@@ -1,6 +1,6 @@
 import sys
 from pathlib import Path
-from typing import Any, Dict, Optional
+from typing import Any, Optional
 
 from setuptools import build_meta as _orig
 from setuptools.build_meta import *  # noqa: F403 # pyright: ignore [reportWildcardImportFromLibrary]
@@ -39,7 +39,7 @@ def gen_types_if_needed() -> None:
 
 def build_wheel(  # type: ignore [no-redef]
     wheel_directory: str,
-    config_settings: Optional[Dict[Any, Any]] = None,
+    config_settings: Optional[dict[Any, Any]] = None,
     metadata_directory: Optional[str] = None,
 ) -> str:
     gen_types_if_needed()
@@ -47,7 +47,7 @@ def build_wheel(  # type: ignore [no-redef]
 
 
 def build_sdist(  # type: ignore [no-redef]
-    sdist_directory: str, config_settings: Optional[Dict[Any, Any]] = None
+    sdist_directory: str, config_settings: Optional[dict[Any, Any]] = None
 ) -> str:
     gen_types_if_needed()
     return _orig.build_sdist(sdist_directory, config_settings)
@@ -55,7 +55,7 @@ def build_sdist(  # type: ignore [no-redef]
 
 def build_editable(  # type: ignore [no-redef]
     wheel_directory: str,
-    config_settings: Optional[Dict[Any, Any]] = None,
+    config_settings: Optional[dict[Any, Any]] = None,
     metadata_directory: Optional[str] = None,
 ) -> str:
     gen_types_if_needed()
diff --git a/client/src/telethon/_impl/client/client/auth.py b/client/src/telethon/_impl/client/client/auth.py
index 9d86bea6..4877c467 100644
--- a/client/src/telethon/_impl/client/client/auth.py
+++ b/client/src/telethon/_impl/client/client/auth.py
@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import getpass
 import re
-from typing import TYPE_CHECKING, Optional, Union
+from typing import TYPE_CHECKING, Optional
 
 from ...crypto import two_factor_auth
 from ...mtproto import RpcError
@@ -115,9 +115,7 @@ async def request_login_code(self: Client, phone: str) -> LoginToken:
     return LoginToken._new(result, phone)
 
 
-async def sign_in(
-    self: Client, token: LoginToken, code: str
-) -> Union[User, PasswordToken]:
+async def sign_in(self: Client, token: LoginToken, code: str) -> User | PasswordToken:
     try:
         result = await self(
             functions.auth.sign_in(
@@ -213,7 +211,7 @@ async def get_password_information(client: Client) -> PasswordToken:
 
 
 async def check_password(
-    self: Client, token: PasswordToken, password: Union[str, bytes]
+    self: Client, token: PasswordToken, password: str | bytes
 ) -> User:
     algo = token._password.current_algo
     if not isinstance(
diff --git a/client/src/telethon/_impl/client/client/bots.py b/client/src/telethon/_impl/client/client/bots.py
index f21fefc3..08f70562 100644
--- a/client/src/telethon/_impl/client/client/bots.py
+++ b/client/src/telethon/_impl/client/client/bots.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, AsyncIterator, List, Optional, Self
+from collections.abc import AsyncIterator
+from typing import TYPE_CHECKING, Optional, Self
 
 from ...tl import abcs, functions, types
 from ..types import ChatLike, InlineResult, NoPublicConstructor
@@ -22,7 +23,7 @@ class InlineResults(metaclass=NoPublicConstructor):
         self._query = query
         self._peer = chat or types.InputPeerEmpty()
         self._offset: Optional[str] = ""
-        self._buffer: List[InlineResult] = []
+        self._buffer: list[InlineResult] = []
         self._done = False
 
     def __aiter__(self) -> Self:
diff --git a/client/src/telethon/_impl/client/client/chats.py b/client/src/telethon/_impl/client/client/chats.py
index 32cca36f..a8514289 100644
--- a/client/src/telethon/_impl/client/client/chats.py
+++ b/client/src/telethon/_impl/client/client/chats.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import datetime
-from typing import TYPE_CHECKING, Optional, Sequence, Set
+from typing import TYPE_CHECKING, Optional, Sequence
 
 from ...session import PackedChat
 from ...tl import abcs, functions, types
@@ -32,7 +32,7 @@ class ParticipantList(AsyncList[Participant]):
         self._chat = chat
         self._packed: Optional[PackedChat] = None
         self._offset = 0
-        self._seen: Set[int] = set()
+        self._seen: set[int] = set()
 
     async def _fetch_next(self) -> None:
         if self._packed is None:
diff --git a/client/src/telethon/_impl/client/client/client.py b/client/src/telethon/_impl/client/client/client.py
index fd8d47a0..9399d927 100644
--- a/client/src/telethon/_impl/client/client/client.py
+++ b/client/src/telethon/_impl/client/client/client.py
@@ -1,24 +1,10 @@
 import asyncio
 import datetime
 import logging
+from collections.abc import AsyncIterator, Awaitable, Callable
 from pathlib import Path
 from types import TracebackType
-from typing import (
-    Any,
-    AsyncIterator,
-    Awaitable,
-    Callable,
-    Dict,
-    List,
-    Literal,
-    Optional,
-    Self,
-    Sequence,
-    Tuple,
-    Type,
-    TypeVar,
-    Union,
-)
+from typing import Any, Literal, Optional, Self, Sequence, Type, TypeVar
 
 from ....version import __version__ as default_version
 from ...mtsender import Connector, Sender
@@ -215,7 +201,7 @@ class Client:
 
     def __init__(
         self,
-        session: Optional[Union[str, Path, Storage]],
+        session: Optional[str | Path | Storage],
         api_id: int,
         api_hash: Optional[str] = None,
         *,
@@ -253,9 +239,9 @@ class Client:
             lang_code=lang_code or "en",
             catch_up=catch_up or False,
             datacenter=datacenter,
-            flood_sleep_threshold=60
-            if flood_sleep_threshold is None
-            else flood_sleep_threshold,
+            flood_sleep_threshold=(
+                60 if flood_sleep_threshold is None else flood_sleep_threshold
+            ),
             update_queue_limit=update_queue_limit,
             base_logger=base_logger,
             connector=connector or (lambda ip, port: asyncio.open_connection(ip, port)),
@@ -267,11 +253,11 @@ class Client:
         self._chat_hashes = ChatHashCache(None)
         self._last_update_limit_warn: Optional[float] = None
         self._updates: asyncio.Queue[
-            Tuple[abcs.Update, Dict[int, Chat]]
+            tuple[abcs.Update, dict[int, Chat]]
         ] = asyncio.Queue(maxsize=self._config.update_queue_limit or 0)
         self._dispatcher: Optional[asyncio.Task[None]] = None
-        self._handlers: Dict[
-            Type[Event], List[Tuple[Callable[[Any], Awaitable[Any]], Optional[Filter]]]
+        self._handlers: dict[
+            Type[Event], list[tuple[Callable[[Any], Awaitable[Any]], Optional[Filter]]]
         ] = {}
         self._check_all_handlers = check_all_handlers
 
@@ -356,9 +342,7 @@ class Client:
         """
         return await bot_sign_in(self, token)
 
-    async def check_password(
-        self, token: PasswordToken, password: Union[str, bytes]
-    ) -> User:
+    async def check_password(self, token: PasswordToken, password: str | bytes) -> User:
         """
         Check the two-factor-authentication (2FA) password.
         If it is correct, completes the login.
@@ -428,7 +412,7 @@ class Client:
         await delete_dialog(self, chat)
 
     async def delete_messages(
-        self, chat: ChatLike, message_ids: List[int], *, revoke: bool = True
+        self, chat: ChatLike, message_ids: list[int], *, revoke: bool = True
     ) -> int:
         """
         Delete messages.
@@ -484,7 +468,7 @@ class Client:
         """
         await disconnect(self)
 
-    async def download(self, media: File, file: Union[str, Path, OutFileLike]) -> None:
+    async def download(self, media: File, file: str | Path | OutFileLike) -> None:
         """
         Download a file.
 
@@ -585,7 +569,7 @@ class Client:
         markdown: Optional[str] = None,
         html: Optional[str] = None,
         link_preview: bool = False,
-        buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+        buttons: Optional[list[btns.Button] | list[list[btns.Button]]] = None,
     ) -> Message:
         """
         Edit a message.
@@ -633,8 +617,8 @@ class Client:
         )
 
     async def forward_messages(
-        self, target: ChatLike, message_ids: List[int], source: ChatLike
-    ) -> List[Message]:
+        self, target: ChatLike, message_ids: list[int], source: ChatLike
+    ) -> list[Message]:
         """
         Forward messages from one :term:`chat` to another.
 
@@ -691,8 +675,8 @@ class Client:
         return get_admin_log(self, chat)
 
     async def get_chats(
-        self, chats: Union[List[ChatLike], Tuple[ChatLike, ...]]
-    ) -> List[Chat]:
+        self, chats: list[ChatLike] | tuple[ChatLike, ...]
+    ) -> list[Chat]:
         """
         Get the latest basic information about the given chats.
 
@@ -907,7 +891,7 @@ class Client:
         )
 
     def get_messages_with_ids(
-        self, chat: ChatLike, message_ids: List[int]
+        self, chat: ChatLike, message_ids: list[int]
     ) -> AsyncList[Message]:
         """
         Get the full message objects from the corresponding message identifiers.
@@ -1160,7 +1144,7 @@ class Client:
         return prepare_album(self)
 
     async def read_message(
-        self, chat: ChatLike, message_id: Union[int, Literal["all"]]
+        self, chat: ChatLike, message_id: int | Literal["all"]
     ) -> None:
         """
         Mark messages as read.
@@ -1361,7 +1345,7 @@ class Client:
     async def send_audio(
         self,
         chat: ChatLike,
-        file: Union[str, Path, InFileLike, File],
+        file: str | Path | InFileLike | File,
         mime_type: Optional[str] = None,
         *,
         size: Optional[int] = None,
@@ -1374,7 +1358,7 @@ class Client:
         caption_markdown: Optional[str] = None,
         caption_html: Optional[str] = None,
         reply_to: Optional[int] = None,
-        buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+        buttons: Optional[list[btns.Button] | list[list[btns.Button]]] = None,
     ) -> Message:
         """
         Send an audio file.
@@ -1424,7 +1408,7 @@ class Client:
     async def send_file(
         self,
         chat: ChatLike,
-        file: Union[str, Path, InFileLike, File],
+        file: str | Path | InFileLike | File,
         *,
         size: Optional[int] = None,
         name: Optional[str] = None,
@@ -1446,7 +1430,7 @@ class Client:
         caption_markdown: Optional[str] = None,
         caption_html: Optional[str] = None,
         reply_to: Optional[int] = None,
-        buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+        buttons: Optional[list[btns.Button] | list[list[btns.Button]]] = None,
     ) -> Message:
         """
         Send any type of file with any amount of attributes.
@@ -1606,13 +1590,13 @@ class Client:
     async def send_message(
         self,
         chat: ChatLike,
-        text: Optional[Union[str, Message]] = None,
+        text: Optional[str | Message] = None,
         *,
         markdown: Optional[str] = None,
         html: Optional[str] = None,
         link_preview: bool = False,
         reply_to: Optional[int] = None,
-        buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+        buttons: Optional[list[btns.Button] | list[list[btns.Button]]] = None,
     ) -> Message:
         """
         Send a message.
@@ -1653,7 +1637,7 @@ class Client:
     async def send_photo(
         self,
         chat: ChatLike,
-        file: Union[str, Path, InFileLike, File],
+        file: str | Path | InFileLike | File,
         *,
         size: Optional[int] = None,
         name: Optional[str] = None,
@@ -1665,7 +1649,7 @@ class Client:
         caption_markdown: Optional[str] = None,
         caption_html: Optional[str] = None,
         reply_to: Optional[int] = None,
-        buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+        buttons: Optional[list[btns.Button] | list[list[btns.Button]]] = None,
     ) -> Message:
         """
         Send a photo file.
@@ -1717,7 +1701,7 @@ class Client:
     async def send_video(
         self,
         chat: ChatLike,
-        file: Union[str, Path, InFileLike, File],
+        file: str | Path | InFileLike | File,
         *,
         size: Optional[int] = None,
         name: Optional[str] = None,
@@ -1732,7 +1716,7 @@ class Client:
         caption_markdown: Optional[str] = None,
         caption_html: Optional[str] = None,
         reply_to: Optional[int] = None,
-        buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+        buttons: Optional[list[btns.Button] | list[list[btns.Button]]] = None,
     ) -> Message:
         """
         Send a video file.
@@ -1947,7 +1931,7 @@ class Client:
         """
         await set_participant_restrictions(self, chat, user, restrictions, until=until)
 
-    async def sign_in(self, token: LoginToken, code: str) -> Union[User, PasswordToken]:
+    async def sign_in(self, token: LoginToken, code: str) -> User | PasswordToken:
         """
         Sign in to a user account.
 
@@ -1993,7 +1977,7 @@ class Client:
         await sign_out(self)
 
     async def unpin_message(
-        self, chat: ChatLike, message_id: Union[int, Literal["all"]]
+        self, chat: ChatLike, message_id: int | Literal["all"]
     ) -> None:
         """
         Unpin one or all messages from the top.
@@ -2041,8 +2025,8 @@ class Client:
         return input_to_peer(self, input)
 
     async def _upload(
-        self, fd: Union[str, Path, InFileLike], size: Optional[int], name: Optional[str]
-    ) -> Tuple[abcs.InputFile, str]:
+        self, fd: str | Path | InFileLike, size: Optional[int], name: Optional[str]
+    ) -> tuple[abcs.InputFile, str]:
         return await upload(self, fd, size, name)
 
     async def __call__(self, request: Request[Return]) -> Return:
diff --git a/client/src/telethon/_impl/client/client/files.py b/client/src/telethon/_impl/client/client/files.py
index e622cd92..c0ab0709 100644
--- a/client/src/telethon/_impl/client/client/files.py
+++ b/client/src/telethon/_impl/client/client/files.py
@@ -4,7 +4,7 @@ import hashlib
 import mimetypes
 from inspect import isawaitable
 from pathlib import Path
-from typing import TYPE_CHECKING, List, Optional, Tuple, Union
+from typing import TYPE_CHECKING, Optional
 
 from ...tl import abcs, functions, types
 from ..types import (
@@ -45,7 +45,7 @@ def prepare_album(self: Client) -> AlbumBuilder:
 async def send_photo(
     self: Client,
     chat: ChatLike,
-    file: Union[str, Path, InFileLike, File],
+    file: str | Path | InFileLike | File,
     *,
     size: Optional[int] = None,
     name: Optional[str] = None,
@@ -57,7 +57,7 @@ async def send_photo(
     caption_markdown: Optional[str] = None,
     caption_html: Optional[str] = None,
     reply_to: Optional[int] = None,
-    buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+    buttons: Optional[list[btns.Button] | list[list[btns.Button]]] = None,
 ) -> Message:
     return await send_file(
         self,
@@ -65,9 +65,11 @@ async def send_photo(
         file,
         size=size,
         name=name,
-        mime_type="image/jpeg"  # specific mime doesn't matter, only that it's image
-        if compress
-        else mime_type,
+        mime_type=(
+            "image/jpeg"  # specific mime doesn't matter, only that it's image
+            if compress
+            else mime_type
+        ),
         compress=compress,
         width=width,
         height=height,
@@ -82,7 +84,7 @@ async def send_photo(
 async def send_audio(
     self: Client,
     chat: ChatLike,
-    file: Union[str, Path, InFileLike, File],
+    file: str | Path | InFileLike | File,
     mime_type: Optional[str] = None,
     *,
     size: Optional[int] = None,
@@ -95,7 +97,7 @@ async def send_audio(
     caption_markdown: Optional[str] = None,
     caption_html: Optional[str] = None,
     reply_to: Optional[int] = None,
-    buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+    buttons: Optional[list[btns.Button] | list[list[btns.Button]]] = None,
 ) -> Message:
     return await send_file(
         self,
@@ -119,7 +121,7 @@ async def send_audio(
 async def send_video(
     self: Client,
     chat: ChatLike,
-    file: Union[str, Path, InFileLike, File],
+    file: str | Path | InFileLike | File,
     *,
     size: Optional[int] = None,
     name: Optional[str] = None,
@@ -134,7 +136,7 @@ async def send_video(
     caption_markdown: Optional[str] = None,
     caption_html: Optional[str] = None,
     reply_to: Optional[int] = None,
-    buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+    buttons: Optional[list[btns.Button] | list[list[btns.Button]]],
 ) -> Message:
     return await send_file(
         self,
@@ -160,7 +162,7 @@ async def send_video(
 async def send_file(
     self: Client,
     chat: ChatLike,
-    file: Union[str, Path, InFileLike, File],
+    file: str | Path | InFileLike | File,
     *,
     size: Optional[int] = None,
     name: Optional[str] = None,
@@ -182,7 +184,7 @@ async def send_file(
     caption_markdown: Optional[str] = None,
     caption_html: Optional[str] = None,
     reply_to: Optional[int] = None,
-    buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+    buttons: Optional[list[btns.Button] | list[list[btns.Button]]],
 ) -> Message:
     message, entities = parse_message(
         text=caption, markdown=caption_markdown, html=caption_html, allow_empty=True
@@ -237,7 +239,7 @@ async def send_file(
 
     # Only bother to calculate attributes when sending documents.
     else:
-        attributes: List[abcs.DocumentAttribute] = []
+        attributes: list[abcs.DocumentAttribute] = []
         attributes.append(types.DocumentAttributeFilename(file_name=name))
 
         if mime_type.startswith("image/"):
@@ -290,9 +292,9 @@ async def do_send_file(
     chat: ChatLike,
     input_media: abcs.InputMedia,
     message: str,
-    entities: Optional[List[abcs.MessageEntity]],
+    entities: Optional[list[abcs.MessageEntity]],
     reply_to: Optional[int],
-    buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]],
+    buttons: Optional[list[btns.Button] | list[list[btns.Button]]],
 ) -> Message:
     peer = (await client._resolve_to_packed(chat))._to_input_peer()
     random_id = generate_random_id()
@@ -305,11 +307,11 @@ async def do_send_file(
                 noforwards=False,
                 update_stickersets_order=False,
                 peer=peer,
-                reply_to=types.InputReplyToMessage(
-                    reply_to_msg_id=reply_to, top_msg_id=None
-                )
-                if reply_to
-                else None,
+                reply_to=(
+                    types.InputReplyToMessage(reply_to_msg_id=reply_to, top_msg_id=None)
+                    if reply_to
+                    else None
+                ),
                 media=input_media,
                 message=message,
                 random_id=random_id,
@@ -325,10 +327,10 @@ async def do_send_file(
 
 async def upload(
     client: Client,
-    file: Union[str, Path, InFileLike],
+    file: str | Path | InFileLike,
     size: Optional[int],
     name: Optional[str],
-) -> Tuple[abcs.InputFile, str]:
+) -> tuple[abcs.InputFile, str]:
     # Paths are opened and closed by us. Anything else is *only* read, not closed.
     if isinstance(file, (str, Path)):
         path = Path(file) if isinstance(file, str) else file
@@ -360,7 +362,7 @@ async def do_upload(
     part = 0
     total_parts = (size + MAX_CHUNK_SIZE - 1) // MAX_CHUNK_SIZE
     buffer = bytearray()
-    to_store: Union[bytearray, bytes] = b""
+    to_store: bytearray | bytes = b""
     hash_md5 = hashlib.md5()
     is_big = size > BIG_FILE_SIZE
 
@@ -454,9 +456,7 @@ def get_file_bytes(self: Client, media: File) -> AsyncList[bytes]:
     return FileBytesList(self, media)
 
 
-async def download(
-    self: Client, media: File, file: Union[str, Path, OutFileLike]
-) -> None:
+async def download(self: Client, media: File, file: str | Path | OutFileLike) -> None:
     fd = OutWrapper(file)
     try:
         async for chunk in get_file_bytes(self, media):
diff --git a/client/src/telethon/_impl/client/client/messages.py b/client/src/telethon/_impl/client/client/messages.py
index 4797a0b5..cb94ee81 100644
--- a/client/src/telethon/_impl/client/client/messages.py
+++ b/client/src/telethon/_impl/client/client/messages.py
@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import datetime
 import sys
-from typing import TYPE_CHECKING, Dict, List, Literal, Optional, Self, Union
+from typing import TYPE_CHECKING, Literal, Optional, Self
 
 from ...session import PackedChat
 from ...tl import abcs, functions, types
@@ -17,13 +17,13 @@ if TYPE_CHECKING:
 async def send_message(
     self: Client,
     chat: ChatLike,
-    text: Optional[Union[str, Message]] = None,
+    text: Optional[str | Message] = None,
     *,
     markdown: Optional[str] = None,
     html: Optional[str] = None,
     link_preview: bool = False,
     reply_to: Optional[int] = None,
-    buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+    buttons: Optional[list[btns.Button] | list[list[btns.Button]]] = None,
 ) -> Message:
     packed = await self._resolve_to_packed(chat)
     peer = packed._to_input_peer()
@@ -121,7 +121,7 @@ async def edit_message(
     markdown: Optional[str] = None,
     html: Optional[str] = None,
     link_preview: bool = False,
-    buttons: Optional[Union[List[btns.Button], List[List[btns.Button]]]] = None,
+    buttons: Optional[list[btns.Button] | list[list[btns.Button]]] = None,
 ) -> Message:
     peer = (await self._resolve_to_packed(chat))._to_input_peer()
     message, entities = parse_message(
@@ -145,7 +145,7 @@ async def edit_message(
 
 
 async def delete_messages(
-    self: Client, chat: ChatLike, message_ids: List[int], *, revoke: bool = True
+    self: Client, chat: ChatLike, message_ids: list[int], *, revoke: bool = True
 ) -> int:
     packed_chat = await self._resolve_to_packed(chat)
     if packed_chat.is_channel():
@@ -163,8 +163,8 @@ async def delete_messages(
 
 
 async def forward_messages(
-    self: Client, target: ChatLike, message_ids: List[int], source: ChatLike
-) -> List[Message]:
+    self: Client, target: ChatLike, message_ids: list[int], source: ChatLike
+) -> list[Message]:
     to_peer = (await self._resolve_to_packed(target))._to_input_peer()
     from_peer = (await self._resolve_to_packed(source))._to_input_peer()
     random_ids = [generate_random_id() for _ in message_ids]
@@ -198,7 +198,7 @@ class MessageList(AsyncList[Message]):
 
     def _extend_buffer(
         self, client: Client, messages: abcs.messages.Messages
-    ) -> Dict[int, Chat]:
+    ) -> dict[int, Chat]:
         if isinstance(messages, types.messages.MessagesNotModified):
             self._total = messages.count
             return {}
@@ -224,7 +224,7 @@ class MessageList(AsyncList[Message]):
 
     def _last_non_empty_message(
         self,
-    ) -> Union[types.Message, types.MessageService, types.MessageEmpty]:
+    ) -> types.Message | types.MessageService | types.MessageEmpty:
         return next(
             (
                 m._raw
@@ -318,13 +318,13 @@ class CherryPickedList(MessageList):
         self,
         client: Client,
         chat: ChatLike,
-        ids: List[int],
+        ids: list[int],
     ):
         super().__init__()
         self._client = client
         self._chat = chat
         self._packed: Optional[PackedChat] = None
-        self._ids: List[abcs.InputMessage] = [types.InputMessageId(id=id) for id in ids]
+        self._ids: list[abcs.InputMessage] = [types.InputMessageId(id=id) for id in ids]
 
     async def _fetch_next(self) -> None:
         if not self._ids:
@@ -350,7 +350,7 @@ class CherryPickedList(MessageList):
 def get_messages_with_ids(
     self: Client,
     chat: ChatLike,
-    message_ids: List[int],
+    message_ids: list[int],
 ) -> AsyncList[Message]:
     return CherryPickedList(self, chat, message_ids)
 
@@ -509,7 +509,7 @@ async def pin_message(self: Client, chat: ChatLike, message_id: int) -> Message:
 
 
 async def unpin_message(
-    self: Client, chat: ChatLike, message_id: Union[int, Literal["all"]]
+    self: Client, chat: ChatLike, message_id: int | Literal["all"]
 ) -> None:
     peer = (await self._resolve_to_packed(chat))._to_input_peer()
     if message_id == "all":
@@ -528,7 +528,7 @@ async def unpin_message(
 
 
 async def read_message(
-    self: Client, chat: ChatLike, message_id: Union[int, Literal["all"]]
+    self: Client, chat: ChatLike, message_id: int | Literal["all"]
 ) -> None:
     packed = await self._resolve_to_packed(chat)
     if message_id == "all":
@@ -555,8 +555,8 @@ class MessageMap:
         self,
         client: Client,
         peer: Optional[abcs.InputPeer],
-        random_id_to_id: Dict[int, int],
-        id_to_message: Dict[int, Message],
+        random_id_to_id: dict[int, int],
+        id_to_message: dict[int, Message],
     ) -> None:
         self._client = client
         self._peer = peer
@@ -599,8 +599,8 @@ def build_message_map(
     else:
         return MessageMap(client, peer, {}, {})
 
-    random_id_to_id: Dict[int, int] = {}
-    id_to_message: Dict[int, Message] = {}
+    random_id_to_id: dict[int, int] = {}
+    id_to_message: dict[int, Message] = {}
     for update in updates:
         if isinstance(update, types.UpdateMessageId):
             random_id_to_id[update.random_id] = update.id
diff --git a/client/src/telethon/_impl/client/client/net.py b/client/src/telethon/_impl/client/client/net.py
index abd88f84..75bb0f1b 100644
--- a/client/src/telethon/_impl/client/client/net.py
+++ b/client/src/telethon/_impl/client/client/net.py
@@ -6,7 +6,7 @@ import logging
 import platform
 import re
 from dataclasses import dataclass, field
-from typing import TYPE_CHECKING, Dict, List, Optional, Tuple, TypeVar
+from typing import TYPE_CHECKING, Optional, TypeVar
 
 from ....version import __version__
 from ...mtproto import BadStatus, Full, RpcError
@@ -75,10 +75,10 @@ def as_concrete_dc_option(opt: abcs.DcOption) -> types.DcOption:
 
 async def connect_sender(
     config: Config,
-    known_dcs: List[DataCenter],
+    known_dcs: list[DataCenter],
     dc: DataCenter,
     force_auth_gen: bool = False,
-) -> Tuple[Sender, List[DataCenter]]:
+) -> tuple[Sender, list[DataCenter]]:
     # Only the ID of the input DC may be known.
     # Find the corresponding address and authentication key if needed.
     addr = dc.ipv4_addr or next(
@@ -143,7 +143,7 @@ async def connect_sender(
     ]
     dc_options.sort(key=lambda opt: opt.static, reverse=True)
 
-    latest_dcs: Dict[int, DataCenter] = {}
+    latest_dcs: dict[int, DataCenter] = {}
     for opt in dc_options:
         dc = latest_dcs.setdefault(opt.id, DataCenter(id=opt.id))
         if opt.ipv6:
diff --git a/client/src/telethon/_impl/client/client/updates.py b/client/src/telethon/_impl/client/client/updates.py
index ced4e73f..740f82f1 100644
--- a/client/src/telethon/_impl/client/client/updates.py
+++ b/client/src/telethon/_impl/client/client/updates.py
@@ -1,17 +1,8 @@
 from __future__ import annotations
 
 import asyncio
-from typing import (
-    TYPE_CHECKING,
-    Any,
-    Awaitable,
-    Callable,
-    List,
-    Optional,
-    Sequence,
-    Type,
-    TypeVar,
-)
+from collections.abc import Awaitable, Callable
+from typing import TYPE_CHECKING, Any, Optional, Sequence, Type, TypeVar
 
 from ...session import Gap
 from ...tl import abcs
@@ -81,7 +72,7 @@ def set_handler_filter(
                 handlers[i] = (h, filter)
 
 
-def process_socket_updates(client: Client, all_updates: List[abcs.Updates]) -> None:
+def process_socket_updates(client: Client, all_updates: list[abcs.Updates]) -> None:
     if not all_updates:
         return
 
@@ -103,7 +94,7 @@ def process_socket_updates(client: Client, all_updates: List[abcs.Updates]) -> N
 
 def extend_update_queue(
     client: Client,
-    updates: List[abcs.Update],
+    updates: list[abcs.Update],
     users: Sequence[abcs.User],
     chats: Sequence[abcs.Chat],
 ) -> None:
diff --git a/client/src/telethon/_impl/client/client/users.py b/client/src/telethon/_impl/client/client/users.py
index 47911843..85ab4371 100644
--- a/client/src/telethon/_impl/client/client/users.py
+++ b/client/src/telethon/_impl/client/client/users.py
@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, List, Optional, Tuple, Union
+from typing import TYPE_CHECKING, Optional
 
 from ...mtproto import RpcError
 from ...session import PackedChat, PackedType
@@ -75,12 +75,12 @@ async def resolve_username(self: Client, username: str) -> Chat:
 
 
 async def get_chats(
-    self: Client, chats: Union[List[ChatLike], Tuple[ChatLike, ...]]
-) -> List[Chat]:
-    packed_chats: List[PackedChat] = []
-    input_users: List[types.InputUser] = []
-    input_chats: List[int] = []
-    input_channels: List[types.InputChannel] = []
+    self: Client, chats: list[ChatLike] | tuple[ChatLike, ...]
+) -> list[Chat]:
+    packed_chats: list[PackedChat] = []
+    input_users: list[types.InputUser] = []
+    input_chats: list[int] = []
+    input_channels: list[types.InputChannel] = []
 
     for chat in chats:
         packed = await resolve_to_packed(self, chat)
@@ -121,7 +121,7 @@ async def get_chats(
 
 
 async def resolve_to_packed(
-    client: Client, chat: Union[ChatLike, abcs.InputPeer, abcs.Peer]
+    client: Client, chat: ChatLike | abcs.InputPeer | abcs.Peer
 ) -> PackedChat:
     if isinstance(chat, PackedChat):
         return chat
diff --git a/client/src/telethon/_impl/client/errors.py b/client/src/telethon/_impl/client/errors.py
index 07f104bc..746c4bbd 100644
--- a/client/src/telethon/_impl/client/errors.py
+++ b/client/src/telethon/_impl/client/errors.py
@@ -1,5 +1,5 @@
 import re
-from typing import Dict, Tuple, Type
+from typing import Type
 
 from ..mtproto import RpcError
 
@@ -20,14 +20,14 @@ def pretty_name(name: str) -> str:
     return "".join(map(str.title, name.split("_")))
 
 
-def from_code(code: int, *, _cache: Dict[int, Type[RpcError]] = {}) -> Type[RpcError]:
+def from_code(code: int, *, _cache: dict[int, Type[RpcError]] = {}) -> Type[RpcError]:
     code = canonicalize_code(code)
     if code not in _cache:
         _cache[code] = type(f"Code{code}", (RpcError,), {})
     return _cache[code]
 
 
-def from_name(name: str, *, _cache: Dict[str, Type[RpcError]] = {}) -> Type[RpcError]:
+def from_name(name: str, *, _cache: dict[str, Type[RpcError]] = {}) -> Type[RpcError]:
     name = canonicalize_name(name)
     if name not in _cache:
         _cache[name] = type(pretty_name(name), (RpcError,), {})
@@ -35,7 +35,7 @@ def from_name(name: str, *, _cache: Dict[str, Type[RpcError]] = {}) -> Type[RpcE
 
 
 def adapt_rpc(
-    error: RpcError, *, _cache: Dict[Tuple[int, str], Type[RpcError]] = {}
+    error: RpcError, *, _cache: dict[tuple[int, str], Type[RpcError]] = {}
 ) -> RpcError:
     code = canonicalize_code(error.code)
     name = canonicalize_name(error.name)
diff --git a/client/src/telethon/_impl/client/events/event.py b/client/src/telethon/_impl/client/events/event.py
index 40ee4d3c..67d8b89e 100644
--- a/client/src/telethon/_impl/client/events/event.py
+++ b/client/src/telethon/_impl/client/events/event.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import abc
-from typing import TYPE_CHECKING, Dict, Optional, Self
+from typing import TYPE_CHECKING, Optional, Self
 
 from ...tl import abcs
 from ..types import Chat, NoPublicConstructor
@@ -25,7 +25,7 @@ class Event(metaclass=NoPublicConstructor):
     @classmethod
     @abc.abstractmethod
     def _try_from_update(
-        cls, client: Client, update: abcs.Update, chat_map: Dict[int, Chat]
+        cls, client: Client, update: abcs.Update, chat_map: dict[int, Chat]
     ) -> Optional[Self]:
         pass
 
diff --git a/client/src/telethon/_impl/client/events/filters/combinators.py b/client/src/telethon/_impl/client/events/filters/combinators.py
index 050ff830..a6bc99d9 100644
--- a/client/src/telethon/_impl/client/events/filters/combinators.py
+++ b/client/src/telethon/_impl/client/events/filters/combinators.py
@@ -1,6 +1,7 @@
 import abc
 import typing
-from typing import Callable, Tuple, TypeAlias
+from collections.abc import Callable
+from typing import TypeAlias
 
 from ..event import Event
 
@@ -74,7 +75,7 @@ class Any(Combinable):
         self._filters = (filter1, filter2, *filters)
 
     @property
-    def filters(self) -> Tuple[Filter, ...]:
+    def filters(self) -> tuple[Filter, ...]:
         """
         The filters being checked, in order.
         """
@@ -114,7 +115,7 @@ class All(Combinable):
         self._filters = (filter1, filter2, *filters)
 
     @property
-    def filters(self) -> Tuple[Filter, ...]:
+    def filters(self) -> tuple[Filter, ...]:
         """
         The filters being checked, in order.
         """
diff --git a/client/src/telethon/_impl/client/events/filters/common.py b/client/src/telethon/_impl/client/events/filters/common.py
index 3e9d0944..f37f8bc9 100644
--- a/client/src/telethon/_impl/client/events/filters/common.py
+++ b/client/src/telethon/_impl/client/events/filters/common.py
@@ -1,4 +1,4 @@
-from typing import Sequence, Set, Type, Union
+from typing import Sequence, Type
 
 from ...types import Channel, Group, User
 from ..event import Event
@@ -18,7 +18,7 @@ class Chats(Combinable):
         self._chats = set(chat_ids)
 
     @property
-    def chat_ids(self) -> Set[int]:
+    def chat_ids(self) -> set[int]:
         """
         A copy of the set of chat identifiers this filter is filtering on.
         """
@@ -43,7 +43,7 @@ class Senders(Combinable):
         self._senders = set(sender_ids)
 
     @property
-    def sender_ids(self) -> Set[int]:
+    def sender_ids(self) -> set[int]:
         """
         A copy of the set of sender identifiers this filter is filtering on.
         """
@@ -79,12 +79,12 @@ class ChatType(Combinable):
 
     def __init__(
         self,
-        type: Type[Union[User, Group, Channel]],
+        type: Type[User | Group | Channel],
     ) -> None:
         self._type = type
 
     @property
-    def type(self) -> Type[Union[User, Group, Channel]]:
+    def type(self) -> Type[User | Group | Channel]:
         """
         The chat type this filter is filtering on.
         """
diff --git a/client/src/telethon/_impl/client/events/filters/messages.py b/client/src/telethon/_impl/client/events/filters/messages.py
index ab2ba484..54c577d2 100644
--- a/client/src/telethon/_impl/client/events/filters/messages.py
+++ b/client/src/telethon/_impl/client/events/filters/messages.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import re
-from typing import TYPE_CHECKING, Literal, Optional, Tuple, Union
+from typing import TYPE_CHECKING, Literal, Optional
 
 from ..event import Event
 from .combinators import Combinable
@@ -28,7 +28,7 @@ class Text(Combinable):
 
     __slots__ = ("_pattern",)
 
-    def __init__(self, regexp: Union[str, re.Pattern[str]]) -> None:
+    def __init__(self, regexp: str | re.Pattern[str]) -> None:
         self._pattern = re.compile(regexp) if isinstance(regexp, str) else regexp
 
     def __call__(self, event: Event) -> bool:
@@ -164,7 +164,7 @@ class Media(Combinable):
     @property
     def types(
         self,
-    ) -> Tuple[Literal["photo", "audio", "video"], ...]:
+    ) -> tuple[Literal["photo", "audio", "video"], ...]:
         """
         The media types being checked.
         """
diff --git a/client/src/telethon/_impl/client/events/messages.py b/client/src/telethon/_impl/client/events/messages.py
index c1c9feeb..ca227980 100644
--- a/client/src/telethon/_impl/client/events/messages.py
+++ b/client/src/telethon/_impl/client/events/messages.py
@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Dict, Optional, Self, Sequence, Union
+from typing import TYPE_CHECKING, Optional, Self, Sequence
 
 from ...tl import abcs, types
 from ..types import Chat, Message, expand_peer, peer_id
@@ -25,7 +25,7 @@ class NewMessage(Event, Message):
 
     @classmethod
     def _try_from_update(
-        cls, client: Client, update: abcs.Update, chat_map: Dict[int, Chat]
+        cls, client: Client, update: abcs.Update, chat_map: dict[int, Chat]
     ) -> Optional[Self]:
         if isinstance(update, (types.UpdateNewMessage, types.UpdateNewChannelMessage)):
             if isinstance(update.message, types.Message):
@@ -47,7 +47,7 @@ class MessageEdited(Event, Message):
 
     @classmethod
     def _try_from_update(
-        cls, client: Client, update: abcs.Update, chat_map: Dict[int, Chat]
+        cls, client: Client, update: abcs.Update, chat_map: dict[int, Chat]
     ) -> Optional[Self]:
         if isinstance(
             update, (types.UpdateEditMessage, types.UpdateEditChannelMessage)
@@ -75,7 +75,7 @@ class MessageDeleted(Event):
 
     @classmethod
     def _try_from_update(
-        cls, client: Client, update: abcs.Update, chat_map: Dict[int, Chat]
+        cls, client: Client, update: abcs.Update, chat_map: dict[int, Chat]
     ) -> Optional[Self]:
         if isinstance(update, types.UpdateDeleteMessages):
             return cls._create(update.messages, None)
@@ -109,13 +109,13 @@ class MessageRead(Event):
     def __init__(
         self,
         client: Client,
-        update: Union[
-            types.UpdateReadHistoryInbox,
-            types.UpdateReadHistoryOutbox,
-            types.UpdateReadChannelInbox,
-            types.UpdateReadChannelOutbox,
-        ],
-        chat_map: Dict[int, Chat],
+        update: (
+            types.UpdateReadHistoryInbox
+            | types.UpdateReadHistoryOutbox
+            | types.UpdateReadChannelInbox
+            | types.UpdateReadChannelOutbox
+        ),
+        chat_map: dict[int, Chat],
     ) -> None:
         self._client = client
         self._raw = update
@@ -123,7 +123,7 @@ class MessageRead(Event):
 
     @classmethod
     def _try_from_update(
-        cls, client: Client, update: abcs.Update, chat_map: Dict[int, Chat]
+        cls, client: Client, update: abcs.Update, chat_map: dict[int, Chat]
     ) -> Optional[Self]:
         if isinstance(
             update,
diff --git a/client/src/telethon/_impl/client/events/queries.py b/client/src/telethon/_impl/client/events/queries.py
index c93e29e2..20a1511c 100644
--- a/client/src/telethon/_impl/client/events/queries.py
+++ b/client/src/telethon/_impl/client/events/queries.py
@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Dict, Optional, Self
+from typing import TYPE_CHECKING, Optional, Self
 
 from ...tl import abcs, functions, types
 from ..client.messages import CherryPickedList
@@ -23,7 +23,7 @@ class ButtonCallback(Event):
         self,
         client: Client,
         update: types.UpdateBotCallbackQuery,
-        chat_map: Dict[int, Chat],
+        chat_map: dict[int, Chat],
     ):
         self._client = client
         self._raw = update
@@ -31,7 +31,7 @@ class ButtonCallback(Event):
 
     @classmethod
     def _try_from_update(
-        cls, client: Client, update: abcs.Update, chat_map: Dict[int, Chat]
+        cls, client: Client, update: abcs.Update, chat_map: dict[int, Chat]
     ) -> Optional[Self]:
         if isinstance(update, types.UpdateBotCallbackQuery) and update.data is not None:
             return cls._create(client, update, chat_map)
@@ -105,7 +105,7 @@ class InlineQuery(Event):
 
     @classmethod
     def _try_from_update(
-        cls, client: Client, update: abcs.Update, chat_map: Dict[int, Chat]
+        cls, client: Client, update: abcs.Update, chat_map: dict[int, Chat]
     ) -> Optional[Self]:
         if isinstance(update, types.UpdateBotInlineQuery):
             return cls._create(update)
diff --git a/client/src/telethon/_impl/client/parsers/html.py b/client/src/telethon/_impl/client/parsers/html.py
index aa5ae110..cafa3d3d 100644
--- a/client/src/telethon/_impl/client/parsers/html.py
+++ b/client/src/telethon/_impl/client/parsers/html.py
@@ -1,19 +1,8 @@
 from collections import deque
+from collections.abc import Callable, Iterable
 from html import escape
 from html.parser import HTMLParser
-from typing import (
-    Any,
-    Callable,
-    Deque,
-    Dict,
-    Iterable,
-    List,
-    Optional,
-    Tuple,
-    Type,
-    Union,
-    cast,
-)
+from typing import Any, Optional, Type, cast
 
 from ...tl.abcs import MessageEntity
 from ...tl.types import (
@@ -37,12 +26,12 @@ class HTMLToTelegramParser(HTMLParser):
     def __init__(self) -> None:
         super().__init__()
         self.text = ""
-        self.entities: List[MessageEntity] = []
-        self._building_entities: Dict[str, MessageEntity] = {}
-        self._open_tags: Deque[str] = deque()
-        self._open_tags_meta: Deque[Optional[str]] = deque()
+        self.entities: list[MessageEntity] = []
+        self._building_entities: dict[str, MessageEntity] = {}
+        self._open_tags: deque[str] = deque()
+        self._open_tags_meta: deque[Optional[str]] = deque()
 
-    def handle_starttag(self, tag: str, attrs: List[Tuple[str, Optional[str]]]) -> None:
+    def handle_starttag(self, tag: str, attrs: list[tuple[str, Optional[str]]]) -> None:
         self._open_tags.appendleft(tag)
         self._open_tags_meta.appendleft(None)
 
@@ -128,7 +117,7 @@ class HTMLToTelegramParser(HTMLParser):
             self.entities.append(entity)
 
 
-def parse(html: str) -> Tuple[str, List[MessageEntity]]:
+def parse(html: str) -> tuple[str, list[MessageEntity]]:
     """
     Parses the given HTML message and returns its stripped representation
     plus a list of the MessageEntity's that were found.
@@ -144,8 +133,8 @@ def parse(html: str) -> Tuple[str, List[MessageEntity]]:
     return del_surrogate(parser.text), parser.entities
 
 
-ENTITY_TO_FORMATTER: Dict[
-    Type[MessageEntity], Union[Tuple[str, str], Callable[[Any, str], Tuple[str, str]]]
+ENTITY_TO_FORMATTER: dict[
+    Type[MessageEntity], tuple[str, str] | Callable[[Any, str], tuple[str, str]]
 ] = {
     MessageEntityBold: ("<strong>", "</strong>"),
     MessageEntityItalic: ("<em>", "</em>"),
@@ -183,7 +172,7 @@ def unparse(text: str, entities: Iterable[MessageEntity]) -> str:
         return escape(text)
 
     text = add_surrogate(text)
-    insert_at: List[Tuple[int, str]] = []
+    insert_at: list[tuple[int, str]] = []
     for e in entities:
         offset, length = getattr(e, "offset", None), getattr(e, "length", None)
         assert isinstance(offset, int) and isinstance(length, int)
diff --git a/client/src/telethon/_impl/client/parsers/markdown.py b/client/src/telethon/_impl/client/parsers/markdown.py
index 3b3f7afd..1704d4fb 100644
--- a/client/src/telethon/_impl/client/parsers/markdown.py
+++ b/client/src/telethon/_impl/client/parsers/markdown.py
@@ -1,5 +1,6 @@
 import re
-from typing import Any, Dict, Iterator, List, Tuple, Type
+from collections.abc import Iterator
+from typing import Any, Type
 
 import markdown_it
 import markdown_it.token
@@ -19,7 +20,7 @@ from ...tl.types import (
 from .strings import add_surrogate, del_surrogate, within_surrogate
 
 MARKDOWN = markdown_it.MarkdownIt().enable("strikethrough")
-DELIMITERS: Dict[Type[MessageEntity], Tuple[str, str]] = {
+DELIMITERS: dict[Type[MessageEntity], tuple[str, str]] = {
     MessageEntityBlockquote: ("> ", ""),
     MessageEntityBold: ("**", "**"),
     MessageEntityCode: ("`", "`"),
@@ -44,7 +45,7 @@ HTML_TO_TYPE = {
 
 
 def expand_inline_and_html(
-    tokens: List[markdown_it.token.Token],
+    tokens: list[markdown_it.token.Token],
 ) -> Iterator[markdown_it.token.Token]:
     for token in tokens:
         if token.type == "inline":
@@ -63,7 +64,7 @@ def expand_inline_and_html(
             yield token
 
 
-def parse(message: str) -> Tuple[str, List[MessageEntity]]:
+def parse(message: str) -> tuple[str, list[MessageEntity]]:
     """
     Parses the given markdown message and returns its stripped representation
     plus a list of the MessageEntity's that were found.
@@ -71,7 +72,7 @@ def parse(message: str) -> Tuple[str, List[MessageEntity]]:
     if not message:
         return message, []
 
-    entities: List[MessageEntity]
+    entities: list[MessageEntity]
     token: markdown_it.token.Token
 
     def push(ty: Any, **extra: object) -> None:
@@ -145,7 +146,7 @@ def parse(message: str) -> Tuple[str, List[MessageEntity]]:
     return del_surrogate(message), entities
 
 
-def unparse(text: str, entities: List[MessageEntity]) -> str:
+def unparse(text: str, entities: list[MessageEntity]) -> str:
     """
     Performs the reverse operation to .parse(), effectively returning
     markdown-like syntax given a normal text and its MessageEntity's.
@@ -157,7 +158,7 @@ def unparse(text: str, entities: List[MessageEntity]) -> str:
         return text
 
     text = add_surrogate(text)
-    insert_at: List[Tuple[int, str]] = []
+    insert_at: list[tuple[int, str]] = []
     for e in entities:
         offset, length = getattr(e, "offset", None), getattr(e, "length", None)
         assert isinstance(offset, int) and isinstance(length, int)
diff --git a/client/src/telethon/_impl/client/types/admin_right.py b/client/src/telethon/_impl/client/types/admin_right.py
index 4c34d414..a63aeb7b 100644
--- a/client/src/telethon/_impl/client/types/admin_right.py
+++ b/client/src/telethon/_impl/client/types/admin_right.py
@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 from enum import Enum
-from typing import Set
 
 from ...tl import abcs, types
 
@@ -62,7 +61,7 @@ class AdminRight(Enum):
     """Allows deleting stories in a channel."""
 
     @classmethod
-    def _from_raw(cls, rights: abcs.ChatAdminRights) -> Set[AdminRight]:
+    def _from_raw(cls, rights: abcs.ChatAdminRights) -> set[AdminRight]:
         assert isinstance(rights, types.ChatAdminRights)
         all_rights = (
             cls.CHANGE_INFO if rights.change_info else None,
@@ -84,7 +83,7 @@ class AdminRight(Enum):
         return set(filter(None, iter(all_rights)))
 
     @classmethod
-    def _chat_rights(cls) -> Set[AdminRight]:
+    def _chat_rights(cls) -> set[AdminRight]:
         return {
             cls.CHANGE_INFO,
             cls.POST_MESSAGES,
@@ -104,7 +103,7 @@ class AdminRight(Enum):
         }
 
     @classmethod
-    def _set_to_raw(cls, all_rights: Set[AdminRight]) -> types.ChatAdminRights:
+    def _set_to_raw(cls, all_rights: set[AdminRight]) -> types.ChatAdminRights:
         return types.ChatAdminRights(
             change_info=cls.CHANGE_INFO in all_rights,
             post_messages=cls.POST_MESSAGES in all_rights,
diff --git a/client/src/telethon/_impl/client/types/album_builder.py b/client/src/telethon/_impl/client/types/album_builder.py
index e3b3c694..059b2e89 100644
--- a/client/src/telethon/_impl/client/types/album_builder.py
+++ b/client/src/telethon/_impl/client/types/album_builder.py
@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import mimetypes
 from pathlib import Path
-from typing import TYPE_CHECKING, List, Optional, Union
+from typing import TYPE_CHECKING, Optional
 
 from ...tl import abcs, functions, types
 from .chat import ChatLike
@@ -23,11 +23,11 @@ class AlbumBuilder(metaclass=NoPublicConstructor):
 
     def __init__(self, *, client: Client):
         self._client = client
-        self._medias: List[types.InputSingleMedia] = []
+        self._medias: list[types.InputSingleMedia] = []
 
     async def add_photo(
         self,
-        file: Union[str, Path, InFileLike],
+        file: str | Path | InFileLike,
         *,
         size: Optional[int] = None,
         caption: Optional[str] = None,
@@ -90,7 +90,7 @@ class AlbumBuilder(metaclass=NoPublicConstructor):
 
     async def add_video(
         self,
-        file: Union[str, Path, InFileLike],
+        file: str | Path | InFileLike,
         *,
         size: Optional[int] = None,
         name: Optional[str] = None,
@@ -141,7 +141,7 @@ class AlbumBuilder(metaclass=NoPublicConstructor):
                 if mime_type is None:
                     mime_type = "application/octet-stream"
 
-            attributes: List[abcs.DocumentAttribute] = []
+            attributes: list[abcs.DocumentAttribute] = []
             attributes.append(types.DocumentAttributeFilename(file_name=name))
             if duration is not None and width is not None and height is not None:
                 attributes.append(
@@ -198,7 +198,7 @@ class AlbumBuilder(metaclass=NoPublicConstructor):
 
     async def send(
         self, chat: ChatLike, *, reply_to: Optional[int] = None
-    ) -> List[Message]:
+    ) -> list[Message]:
         """
         Send the album.
 
@@ -224,11 +224,13 @@ class AlbumBuilder(metaclass=NoPublicConstructor):
                     noforwards=False,
                     update_stickersets_order=False,
                     peer=peer,
-                    reply_to=types.InputReplyToMessage(
-                        reply_to_msg_id=reply_to, top_msg_id=None
-                    )
-                    if reply_to
-                    else None,
+                    reply_to=(
+                        types.InputReplyToMessage(
+                            reply_to_msg_id=reply_to, top_msg_id=None
+                        )
+                        if reply_to
+                        else None
+                    ),
                     multi_media=self._medias,
                     schedule_date=None,
                     send_as=None,
diff --git a/client/src/telethon/_impl/client/types/async_list.py b/client/src/telethon/_impl/client/types/async_list.py
index ff491d73..560a4c86 100644
--- a/client/src/telethon/_impl/client/types/async_list.py
+++ b/client/src/telethon/_impl/client/types/async_list.py
@@ -1,6 +1,7 @@
 import abc
 from collections import deque
-from typing import Any, Deque, Generator, Generic, List, Self, TypeVar
+from collections.abc import Generator
+from typing import Any, Generic, Self, TypeVar
 
 T = TypeVar("T")
 
@@ -40,7 +41,7 @@ class AsyncList(abc.ABC, Generic[T]):
     """
 
     def __init__(self) -> None:
-        self._buffer: Deque[T] = deque()
+        self._buffer: deque[T] = deque()
         self._total: int = 0
         self._done = False
 
@@ -54,14 +55,14 @@ class AsyncList(abc.ABC, Generic[T]):
         The `_done` flag should be set if it is known that the end was reached
         """
 
-    async def _collect(self) -> List[T]:
+    async def _collect(self) -> list[T]:
         prev = -1
         while not self._done and prev != len(self._buffer):
             prev = len(self._buffer)
             await self._fetch_next()
         return list(self._buffer)
 
-    def __await__(self) -> Generator[Any, None, List[T]]:
+    def __await__(self) -> Generator[Any, None, list[T]]:
         return self._collect().__await__()
 
     def __aiter__(self) -> Self:
diff --git a/client/src/telethon/_impl/client/types/buttons/__init__.py b/client/src/telethon/_impl/client/types/buttons/__init__.py
index 65aaaac6..89e7c4a0 100644
--- a/client/src/telethon/_impl/client/types/buttons/__init__.py
+++ b/client/src/telethon/_impl/client/types/buttons/__init__.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import weakref
-from typing import TYPE_CHECKING, List, Optional, Union
+from typing import TYPE_CHECKING, Optional
 
 from ....tl import abcs, types
 from .button import Button
@@ -24,7 +24,7 @@ def as_concrete_row(row: abcs.KeyboardButtonRow) -> types.KeyboardButtonRow:
 
 
 def build_keyboard(
-    btns: Optional[Union[List[Button], List[List[Button]]]]
+    btns: Optional[list[Button] | list[list[Button]]],
 ) -> Optional[abcs.ReplyMarkup]:
     # list[button] -> list[list[button]]
     # This does allow for "invalid" inputs (mixing lists and non-lists), but that's acceptable.
@@ -37,7 +37,7 @@ def build_keyboard(
     if not buttons_lists:
         return None
 
-    rows: List[abcs.KeyboardButtonRow] = [
+    rows: list[abcs.KeyboardButtonRow] = [
         types.KeyboardButtonRow(buttons=[btn._raw for btn in btns])
         for btns in buttons_lists
     ]
diff --git a/client/src/telethon/_impl/client/types/buttons/button.py b/client/src/telethon/_impl/client/types/buttons/button.py
index c23fe977..558e8ef6 100644
--- a/client/src/telethon/_impl/client/types/buttons/button.py
+++ b/client/src/telethon/_impl/client/types/buttons/button.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import weakref
-from typing import TYPE_CHECKING, Optional, Union
+from typing import TYPE_CHECKING, Optional
 
 from ....tl import types
 
@@ -9,24 +9,24 @@ if TYPE_CHECKING:
     from ..message import Message
 
 
-ButtonTypes = Union[
-    types.KeyboardButton,
-    types.KeyboardButtonUrl,
-    types.KeyboardButtonCallback,
-    types.KeyboardButtonRequestPhone,
-    types.KeyboardButtonRequestGeoLocation,
-    types.KeyboardButtonSwitchInline,
-    types.KeyboardButtonGame,
-    types.KeyboardButtonBuy,
-    types.KeyboardButtonUrlAuth,
-    types.InputKeyboardButtonUrlAuth,
-    types.KeyboardButtonRequestPoll,
-    types.InputKeyboardButtonUserProfile,
-    types.KeyboardButtonUserProfile,
-    types.KeyboardButtonWebView,
-    types.KeyboardButtonSimpleWebView,
-    types.KeyboardButtonRequestPeer,
-]
+ButtonTypes = (
+    types.KeyboardButton
+    | types.KeyboardButtonUrl
+    | types.KeyboardButtonCallback
+    | types.KeyboardButtonRequestPhone
+    | types.KeyboardButtonRequestGeoLocation
+    | types.KeyboardButtonSwitchInline
+    | types.KeyboardButtonGame
+    | types.KeyboardButtonBuy
+    | types.KeyboardButtonUrlAuth
+    | types.InputKeyboardButtonUrlAuth
+    | types.KeyboardButtonRequestPoll
+    | types.InputKeyboardButtonUserProfile
+    | types.KeyboardButtonUserProfile
+    | types.KeyboardButtonWebView
+    | types.KeyboardButtonSimpleWebView
+    | types.KeyboardButtonRequestPeer
+)
 
 
 class Button:
diff --git a/client/src/telethon/_impl/client/types/chat/__init__.py b/client/src/telethon/_impl/client/types/chat/__init__.py
index 83666b49..ab042721 100644
--- a/client/src/telethon/_impl/client/types/chat/__init__.py
+++ b/client/src/telethon/_impl/client/types/chat/__init__.py
@@ -3,7 +3,7 @@ from __future__ import annotations
 import itertools
 import sys
 from collections import defaultdict
-from typing import TYPE_CHECKING, DefaultDict, Dict, List, Optional, Sequence, Union
+from typing import TYPE_CHECKING, Optional, Sequence
 
 from ....session import PackedChat
 from ....tl import abcs, types
@@ -15,12 +15,12 @@ from .user import User
 if TYPE_CHECKING:
     from ...client.client import Client
 
-ChatLike = Union[Chat, PackedChat, int, str]
+ChatLike = Chat | PackedChat | int | str
 
 
 def build_chat_map(
     client: Client, users: Sequence[abcs.User], chats: Sequence[abcs.Chat]
-) -> Dict[int, Chat]:
+) -> dict[int, Chat]:
     users_iter = (User._from_raw(u) for u in users)
     chats_iter = (
         (
@@ -31,11 +31,11 @@ def build_chat_map(
         for c in chats
     )
 
-    result: Dict[int, Chat] = {c.id: c for c in itertools.chain(users_iter, chats_iter)}
+    result: dict[int, Chat] = {c.id: c for c in itertools.chain(users_iter, chats_iter)}
 
     if len(result) != len(users) + len(chats):
         # The fabled ID collision between different chat types.
-        counter: DefaultDict[int, List[Union[abcs.User, abcs.Chat]]] = defaultdict(list)
+        counter: defaultdict[int, list[abcs.User | abcs.Chat]] = defaultdict(list)
         for user in users:
             if (id := getattr(user, "id", None)) is not None:
                 counter[id].append(user)
diff --git a/client/src/telethon/_impl/client/types/chat/channel.py b/client/src/telethon/_impl/client/types/chat/channel.py
index b498f4c5..dce7db4b 100644
--- a/client/src/telethon/_impl/client/types/chat/channel.py
+++ b/client/src/telethon/_impl/client/types/chat/channel.py
@@ -1,4 +1,4 @@
-from typing import Optional, Self, Union
+from typing import Optional, Self
 
 from ....session import PackedChat, PackedType
 from ....tl import abcs, types
@@ -16,7 +16,7 @@ class Channel(Chat, metaclass=NoPublicConstructor):
 
     def __init__(
         self,
-        raw: Union[types.Channel, types.ChannelForbidden],
+        raw: types.Channel | types.ChannelForbidden,
     ) -> None:
         self._raw = raw
 
@@ -55,9 +55,11 @@ class Channel(Chat, metaclass=NoPublicConstructor):
             return None
         else:
             return PackedChat(
-                ty=PackedType.GIGAGROUP
-                if getattr(self._raw, "gigagroup", False)
-                else PackedType.BROADCAST,
+                ty=(
+                    PackedType.GIGAGROUP
+                    if getattr(self._raw, "gigagroup", False)
+                    else PackedType.BROADCAST
+                ),
                 id=self._raw.id,
                 access_hash=self._raw.access_hash,
             )
diff --git a/client/src/telethon/_impl/client/types/chat/group.py b/client/src/telethon/_impl/client/types/chat/group.py
index 031e18af..d7eb81a1 100644
--- a/client/src/telethon/_impl/client/types/chat/group.py
+++ b/client/src/telethon/_impl/client/types/chat/group.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import datetime
-from typing import TYPE_CHECKING, Optional, Self, Sequence, Union
+from typing import TYPE_CHECKING, Optional, Self, Sequence
 
 from ....session import PackedChat, PackedType
 from ....tl import abcs, types
@@ -24,13 +24,13 @@ class Group(Chat, metaclass=NoPublicConstructor):
     def __init__(
         self,
         client: Client,
-        chat: Union[
-            types.ChatEmpty,
-            types.Chat,
-            types.ChatForbidden,
-            types.Channel,
-            types.ChannelForbidden,
-        ],
+        chat: (
+            types.ChatEmpty
+            | types.Chat
+            | types.ChatForbidden
+            | types.Channel
+            | types.ChannelForbidden
+        ),
     ) -> None:
         self._client = client
         self._raw = chat
diff --git a/client/src/telethon/_impl/client/types/chat_restriction.py b/client/src/telethon/_impl/client/types/chat_restriction.py
index 31cb83e2..3c330f91 100644
--- a/client/src/telethon/_impl/client/types/chat_restriction.py
+++ b/client/src/telethon/_impl/client/types/chat_restriction.py
@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 from enum import Enum
-from typing import Set
 
 from ...tl import abcs, types
 
@@ -85,7 +84,7 @@ class ChatRestriction(Enum):
     """Prevents sending plain text messages with no media to the chat."""
 
     @classmethod
-    def _from_raw(cls, rights: abcs.ChatBannedRights) -> Set[ChatRestriction]:
+    def _from_raw(cls, rights: abcs.ChatBannedRights) -> set[ChatRestriction]:
         assert isinstance(rights, types.ChatBannedRights)
         restrictions = (
             cls.VIEW_MESSAGES if rights.view_messages else None,
@@ -113,7 +112,7 @@ class ChatRestriction(Enum):
 
     @classmethod
     def _set_to_raw(
-        cls, restrictions: Set[ChatRestriction], until_date: int
+        cls, restrictions: set[ChatRestriction], until_date: int
     ) -> types.ChatBannedRights:
         return types.ChatBannedRights(
             view_messages=cls.VIEW_MESSAGES in restrictions,
diff --git a/client/src/telethon/_impl/client/types/dialog.py b/client/src/telethon/_impl/client/types/dialog.py
index 54357a11..59890fba 100644
--- a/client/src/telethon/_impl/client/types/dialog.py
+++ b/client/src/telethon/_impl/client/types/dialog.py
@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Dict, Optional, Self, Union
+from typing import TYPE_CHECKING, Optional, Self
 
 from ...tl import abcs, types
 from .chat import Chat, peer_id
@@ -26,9 +26,9 @@ class Dialog(metaclass=NoPublicConstructor):
     def __init__(
         self,
         client: Client,
-        raw: Union[types.Dialog, types.DialogFolder],
-        chat_map: Dict[int, Chat],
-        msg_map: Dict[int, Message],
+        raw: types.Dialog | types.DialogFolder,
+        chat_map: dict[int, Chat],
+        msg_map: dict[int, Message],
     ) -> None:
         self._client = client
         self._raw = raw
@@ -40,8 +40,8 @@ class Dialog(metaclass=NoPublicConstructor):
         cls,
         client: Client,
         dialog: abcs.Dialog,
-        chat_map: Dict[int, Chat],
-        msg_map: Dict[int, Message],
+        chat_map: dict[int, Chat],
+        msg_map: dict[int, Message],
     ) -> Self:
         assert isinstance(dialog, (types.Dialog, types.DialogFolder))
         return cls._create(client, dialog, chat_map, msg_map)
diff --git a/client/src/telethon/_impl/client/types/draft.py b/client/src/telethon/_impl/client/types/draft.py
index 4568c613..446af514 100644
--- a/client/src/telethon/_impl/client/types/draft.py
+++ b/client/src/telethon/_impl/client/types/draft.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import datetime
-from typing import TYPE_CHECKING, Dict, Optional, Self
+from typing import TYPE_CHECKING, Optional, Self
 
 from ...session import PackedChat
 from ...tl import abcs, functions, types
@@ -27,7 +27,7 @@ class Draft(metaclass=NoPublicConstructor):
         peer: abcs.Peer,
         top_msg_id: Optional[int],
         raw: abcs.DraftMessage,
-        chat_map: Dict[int, Chat],
+        chat_map: dict[int, Chat],
     ) -> None:
         assert isinstance(raw, (types.DraftMessage, types.DraftMessageEmpty))
         self._client = client
@@ -38,7 +38,7 @@ class Draft(metaclass=NoPublicConstructor):
 
     @classmethod
     def _from_raw_update(
-        cls, client: Client, draft: types.UpdateDraftMessage, chat_map: Dict[int, Chat]
+        cls, client: Client, draft: types.UpdateDraftMessage, chat_map: dict[int, Chat]
     ) -> Self:
         return cls._create(client, draft.peer, draft.top_msg_id, draft.draft, chat_map)
 
@@ -49,7 +49,7 @@ class Draft(metaclass=NoPublicConstructor):
         peer: abcs.Peer,
         top_msg_id: int,
         draft: abcs.DraftMessage,
-        chat_map: Dict[int, Chat],
+        chat_map: dict[int, Chat],
     ) -> Self:
         return cls._create(client, peer, top_msg_id, draft, chat_map)
 
@@ -197,11 +197,11 @@ class Draft(metaclass=NoPublicConstructor):
                 noforwards=False,
                 update_stickersets_order=False,
                 peer=peer,
-                reply_to=types.InputReplyToMessage(
-                    reply_to_msg_id=reply_to, top_msg_id=None
-                )
-                if reply_to
-                else None,
+                reply_to=(
+                    types.InputReplyToMessage(reply_to_msg_id=reply_to, top_msg_id=None)
+                    if reply_to
+                    else None
+                ),
                 message=message,
                 random_id=random_id,
                 reply_markup=None,
@@ -216,19 +216,23 @@ class Draft(metaclass=NoPublicConstructor):
                 {},
                 out=result.out,
                 id=result.id,
-                from_id=types.PeerUser(user_id=self._client._session.user.id)
-                if self._client._session.user
-                else None,
+                from_id=(
+                    types.PeerUser(user_id=self._client._session.user.id)
+                    if self._client._session.user
+                    else None
+                ),
                 peer_id=packed._to_peer(),
-                reply_to=types.MessageReplyHeader(
-                    reply_to_scheduled=False,
-                    forum_topic=False,
-                    reply_to_msg_id=reply_to,
-                    reply_to_peer_id=None,
-                    reply_to_top_id=None,
-                )
-                if reply_to
-                else None,
+                reply_to=(
+                    types.MessageReplyHeader(
+                        reply_to_scheduled=False,
+                        forum_topic=False,
+                        reply_to_msg_id=reply_to,
+                        reply_to_peer_id=None,
+                        reply_to_top_id=None,
+                    )
+                    if reply_to
+                    else None
+                ),
                 date=result.date,
                 message=message,
                 media=result.media,
diff --git a/client/src/telethon/_impl/client/types/file.py b/client/src/telethon/_impl/client/types/file.py
index 89dc9993..1e5e018f 100644
--- a/client/src/telethon/_impl/client/types/file.py
+++ b/client/src/telethon/_impl/client/types/file.py
@@ -2,20 +2,11 @@ from __future__ import annotations
 
 import mimetypes
 import urllib.parse
+from collections.abc import Coroutine
 from inspect import isawaitable
 from io import BufferedWriter
 from pathlib import Path
-from typing import (
-    TYPE_CHECKING,
-    Any,
-    Coroutine,
-    List,
-    Optional,
-    Protocol,
-    Self,
-    Sequence,
-    Union,
-)
+from typing import TYPE_CHECKING, Any, Optional, Protocol, Self, Sequence
 
 from ...tl import abcs, types
 from .meta import NoPublicConstructor
@@ -79,7 +70,7 @@ def photo_size_dimensions(
         raise RuntimeError("unexpected case")
 
 
-def try_get_url_path(maybe_url: Union[str, Path, InFileLike]) -> Optional[str]:
+def try_get_url_path(maybe_url: str | Path | InFileLike) -> Optional[str]:
     if not isinstance(maybe_url, str):
         return None
     lowercase = maybe_url.lower()
@@ -97,7 +88,7 @@ class InFileLike(Protocol):
     It's only used in function parameters.
     """
 
-    def read(self, n: int, /) -> Union[bytes, Coroutine[Any, Any, bytes]]:
+    def read(self, n: int, /) -> bytes | Coroutine[Any, Any, bytes]:
         """
         Read from the file or buffer.
 
@@ -116,7 +107,7 @@ class OutFileLike(Protocol):
     It's only used in function parameters.
     """
 
-    def write(self, data: bytes) -> Union[Any, Coroutine[Any, Any, Any]]:
+    def write(self, data: bytes) -> Any | Coroutine[Any, Any, Any]:
         """
         Write all the data into the file or buffer.
 
@@ -128,10 +119,10 @@ class OutFileLike(Protocol):
 class OutWrapper:
     __slots__ = ("_fd", "_owned_fd")
 
-    _fd: Union[OutFileLike, BufferedWriter]
+    _fd: OutFileLike | BufferedWriter
     _owned_fd: Optional[BufferedWriter]
 
-    def __init__(self, file: Union[str, Path, OutFileLike]):
+    def __init__(self, file: str | Path | OutFileLike):
         if isinstance(file, str):
             file = Path(file)
 
@@ -173,7 +164,7 @@ class File(metaclass=NoPublicConstructor):
         input_media: abcs.InputMedia,
         thumb: Optional[abcs.PhotoSize],
         thumbs: Optional[Sequence[abcs.PhotoSize]],
-        raw: Optional[Union[abcs.MessageMedia, abcs.Photo, abcs.Document]],
+        raw: Optional[abcs.MessageMedia | abcs.Photo | abcs.Document],
         client: Optional[Client],
     ):
         self._attributes = attributes
@@ -336,7 +327,7 @@ class File(metaclass=NoPublicConstructor):
             return mimetypes.guess_extension(self._mime) or ""
 
     @property
-    def thumbnails(self) -> List[File]:
+    def thumbnails(self) -> list[File]:
         """
         The file thumbnails.
 
@@ -393,7 +384,7 @@ class File(metaclass=NoPublicConstructor):
 
         return None
 
-    async def download(self, file: Union[str, Path, OutFileLike]) -> None:
+    async def download(self, file: str | Path | OutFileLike) -> None:
         """
         Alias for :meth:`telethon.Client.download`.
 
diff --git a/client/src/telethon/_impl/client/types/inline_result.py b/client/src/telethon/_impl/client/types/inline_result.py
index 3a4746a0..92269540 100644
--- a/client/src/telethon/_impl/client/types/inline_result.py
+++ b/client/src/telethon/_impl/client/types/inline_result.py
@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Optional, Union
+from typing import TYPE_CHECKING, Optional
 
 from ...tl import abcs, functions, types
 from .chat import ChatLike
@@ -22,7 +22,7 @@ class InlineResult(metaclass=NoPublicConstructor):
         self,
         client: Client,
         results: types.messages.BotResults,
-        result: Union[types.BotInlineMediaResult, types.BotInlineResult],
+        result: types.BotInlineMediaResult | types.BotInlineResult,
         default_peer: abcs.InputPeer,
     ):
         self._client = client
diff --git a/client/src/telethon/_impl/client/types/message.py b/client/src/telethon/_impl/client/types/message.py
index 5c390b17..8edd6504 100644
--- a/client/src/telethon/_impl/client/types/message.py
+++ b/client/src/telethon/_impl/client/types/message.py
@@ -2,17 +2,7 @@ from __future__ import annotations
 
 import datetime
 import time
-from typing import (
-    TYPE_CHECKING,
-    Any,
-    Dict,
-    List,
-    Optional,
-    Self,
-    Sequence,
-    Tuple,
-    Union,
-)
+from typing import TYPE_CHECKING, Any, Optional, Self, Sequence
 
 from ...tl import abcs, types
 from ..parsers import (
@@ -68,7 +58,7 @@ class Message(metaclass=NoPublicConstructor):
     """
 
     def __init__(
-        self, client: Client, message: abcs.Message, chat_map: Dict[int, Chat]
+        self, client: Client, message: abcs.Message, chat_map: dict[int, Chat]
     ) -> None:
         assert isinstance(
             message, (types.Message, types.MessageService, types.MessageEmpty)
@@ -79,7 +69,7 @@ class Message(metaclass=NoPublicConstructor):
 
     @classmethod
     def _from_raw(
-        cls, client: Client, message: abcs.Message, chat_map: Dict[int, Chat]
+        cls, client: Client, message: abcs.Message, chat_map: dict[int, Chat]
     ) -> Self:
         return cls._create(client, message, chat_map)
 
@@ -87,14 +77,14 @@ class Message(metaclass=NoPublicConstructor):
     def _from_defaults(
         cls,
         client: Client,
-        chat_map: Dict[int, Chat],
+        chat_map: dict[int, Chat],
         id: int,
         peer_id: abcs.Peer,
         date: int,
         message: str,
         **kwargs: Any,
     ) -> Self:
-        default_kwargs: Dict[str, Any] = {
+        default_kwargs: dict[str, Any] = {
             "out": False,
             "mentioned": False,
             "media_unread": False,
@@ -337,12 +327,12 @@ class Message(metaclass=NoPublicConstructor):
 
     async def respond(
         self,
-        text: Optional[Union[str, Message]] = None,
+        text: Optional[str | Message] = None,
         *,
         markdown: Optional[str] = None,
         html: Optional[str] = None,
         link_preview: bool = False,
-        buttons: Optional[Union[List[Button], List[List[Button]]]] = None,
+        buttons: Optional[list[Button] | list[list[Button]]] = None,
     ) -> Message:
         """
         Alias for :meth:`telethon.Client.send_message`.
@@ -364,12 +354,12 @@ class Message(metaclass=NoPublicConstructor):
 
     async def reply(
         self,
-        text: Optional[Union[str, Message]] = None,
+        text: Optional[str | Message] = None,
         *,
         markdown: Optional[str] = None,
         html: Optional[str] = None,
         link_preview: bool = False,
-        buttons: Optional[Union[List[Button], List[List[Button]]]] = None,
+        buttons: Optional[list[Button] | list[list[Button]]] = None,
     ) -> Message:
         """
         Alias for :meth:`telethon.Client.send_message` with the ``reply_to`` parameter set to this message.
@@ -404,7 +394,7 @@ class Message(metaclass=NoPublicConstructor):
         markdown: Optional[str] = None,
         html: Optional[str] = None,
         link_preview: bool = False,
-        buttons: Optional[Union[List[Button], List[List[Button]]]] = None,
+        buttons: Optional[list[Button] | list[list[Button]]] = None,
     ) -> Message:
         """
         Alias for :meth:`telethon.Client.edit_message`.
@@ -458,7 +448,7 @@ class Message(metaclass=NoPublicConstructor):
         pass
 
     @property
-    def buttons(self) -> Optional[List[List[Button]]]:
+    def buttons(self) -> Optional[list[list[Button]]]:
         """
         The buttons attached to the message.
 
@@ -512,8 +502,8 @@ class Message(metaclass=NoPublicConstructor):
 
 
 def build_msg_map(
-    client: Client, messages: Sequence[abcs.Message], chat_map: Dict[int, Chat]
-) -> Dict[int, Message]:
+    client: Client, messages: Sequence[abcs.Message], chat_map: dict[int, Chat]
+) -> dict[int, Message]:
     return {
         msg.id: msg
         for msg in (Message._from_raw(client, m, chat_map) for m in messages)
@@ -526,7 +516,7 @@ def parse_message(
     markdown: Optional[str],
     html: Optional[str],
     allow_empty: bool,
-) -> Tuple[str, Optional[List[abcs.MessageEntity]]]:
+) -> tuple[str, Optional[list[abcs.MessageEntity]]]:
     cnt = sum((text is not None, markdown is not None, html is not None))
     if cnt != 1:
         if cnt == 0 and allow_empty:
diff --git a/client/src/telethon/_impl/client/types/participant.py b/client/src/telethon/_impl/client/types/participant.py
index ae2861a3..6f13a1af 100644
--- a/client/src/telethon/_impl/client/types/participant.py
+++ b/client/src/telethon/_impl/client/types/participant.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import datetime
-from typing import TYPE_CHECKING, Dict, Optional, Self, Sequence, Set, Union
+from typing import TYPE_CHECKING, Optional, Self, Sequence
 
 from ...session import PackedChat
 from ...tl import abcs, types
@@ -25,18 +25,18 @@ class Participant(metaclass=NoPublicConstructor):
         self,
         client: Client,
         chat: PackedChat,
-        participant: Union[
-            types.ChannelParticipant,
-            types.ChannelParticipantSelf,
-            types.ChannelParticipantCreator,
-            types.ChannelParticipantAdmin,
-            types.ChannelParticipantBanned,
-            types.ChannelParticipantLeft,
-            types.ChatParticipant,
-            types.ChatParticipantCreator,
-            types.ChatParticipantAdmin,
-        ],
-        chat_map: Dict[int, Chat],
+        participant: (
+            types.ChannelParticipant
+            | types.ChannelParticipantSelf
+            | types.ChannelParticipantCreator
+            | types.ChannelParticipantAdmin
+            | types.ChannelParticipantBanned
+            | types.ChannelParticipantLeft
+            | types.ChatParticipant
+            | types.ChatParticipantCreator
+            | types.ChatParticipantAdmin
+        ),
+        chat_map: dict[int, Chat],
     ) -> None:
         self._client = client
         self._chat = chat
@@ -49,7 +49,7 @@ class Participant(metaclass=NoPublicConstructor):
         client: Client,
         chat: PackedChat,
         participant: abcs.ChannelParticipant,
-        chat_map: Dict[int, Chat],
+        chat_map: dict[int, Chat],
     ) -> Self:
         if isinstance(
             participant,
@@ -72,7 +72,7 @@ class Participant(metaclass=NoPublicConstructor):
         client: Client,
         chat: PackedChat,
         participant: abcs.ChatParticipant,
-        chat_map: Dict[int, Chat],
+        chat_map: dict[int, Chat],
     ) -> Self:
         if isinstance(
             participant,
@@ -162,7 +162,7 @@ class Participant(metaclass=NoPublicConstructor):
         )
 
     @property
-    def admin_rights(self) -> Optional[Set[AdminRight]]:
+    def admin_rights(self) -> Optional[set[AdminRight]]:
         """
         The set of administrator rights this participant has been granted, if they are an administrator.
         """
@@ -178,7 +178,7 @@ class Participant(metaclass=NoPublicConstructor):
             return None
 
     @property
-    def restrictions(self) -> Optional[Set[ChatRestriction]]:
+    def restrictions(self) -> Optional[set[ChatRestriction]]:
         """
         The set of restrictions applied to this participant, if they are banned.
         """
diff --git a/client/src/telethon/_impl/client/types/recent_action.py b/client/src/telethon/_impl/client/types/recent_action.py
index 47ef8edc..02ed82f3 100644
--- a/client/src/telethon/_impl/client/types/recent_action.py
+++ b/client/src/telethon/_impl/client/types/recent_action.py
@@ -1,5 +1,3 @@
-from typing import Dict
-
 from ...tl import abcs, types
 from .chat import Chat
 from .meta import NoPublicConstructor
@@ -17,7 +15,7 @@ class RecentAction(metaclass=NoPublicConstructor):
     def __init__(
         self,
         event: abcs.ChannelAdminLogEvent,
-        chat_map: Dict[int, Chat],
+        chat_map: dict[int, Chat],
     ) -> None:
         assert isinstance(event, types.ChannelAdminLogEvent)
         self._raw = event
diff --git a/client/src/telethon/_impl/crypto/factorize.py b/client/src/telethon/_impl/crypto/factorize.py
index 49d2c509..dcc10866 100644
--- a/client/src/telethon/_impl/crypto/factorize.py
+++ b/client/src/telethon/_impl/crypto/factorize.py
@@ -1,9 +1,8 @@
 from math import gcd
 from random import randrange
-from typing import Tuple
 
 
-def factorize(pq: int) -> Tuple[int, int]:
+def factorize(pq: int) -> tuple[int, int]:
     """
     Factorize the given number into its two prime factors.
 
diff --git a/client/src/telethon/_impl/mtproto/authentication.py b/client/src/telethon/_impl/mtproto/authentication.py
index 8b7dc20c..1b20dc47 100644
--- a/client/src/telethon/_impl/mtproto/authentication.py
+++ b/client/src/telethon/_impl/mtproto/authentication.py
@@ -3,7 +3,6 @@ import struct
 import time
 from dataclasses import dataclass
 from hashlib import sha1
-from typing import Tuple
 
 from ..crypto import (
     RSA_KEYS,
@@ -67,17 +66,17 @@ class DhGenData:
     nonce_number: int
 
 
-def _do_step1(random_bytes: bytes) -> Tuple[bytes, Step1]:
+def _do_step1(random_bytes: bytes) -> tuple[bytes, Step1]:
     assert len(random_bytes) == 16
     nonce = int.from_bytes(random_bytes)
     return req_pq_multi(nonce=nonce), Step1(nonce=nonce)
 
 
-def step1() -> Tuple[bytes, Step1]:
+def step1() -> tuple[bytes, Step1]:
     return _do_step1(os.urandom(16))
 
 
-def _do_step2(data: Step1, response: bytes, random_bytes: bytes) -> Tuple[bytes, Step2]:
+def _do_step2(data: Step1, response: bytes, random_bytes: bytes) -> tuple[bytes, Step2]:
     assert len(random_bytes) == 288
     nonce = data.nonce
     res_pq = ResPq.from_bytes(response)
@@ -130,13 +129,13 @@ def _do_step2(data: Step1, response: bytes, random_bytes: bytes) -> Tuple[bytes,
     ), Step2(nonce=nonce, server_nonce=res_pq.server_nonce, new_nonce=new_nonce)
 
 
-def step2(data: Step1, response: bytes) -> Tuple[bytes, Step2]:
+def step2(data: Step1, response: bytes) -> tuple[bytes, Step2]:
     return _do_step2(data, response, os.urandom(288))
 
 
 def _do_step3(
     data: Step2, response: bytes, random_bytes: bytes, now: int
-) -> Tuple[bytes, Step3]:
+) -> tuple[bytes, Step3]:
     assert len(random_bytes) == 272
 
     nonce = data.nonce
@@ -231,7 +230,7 @@ def _do_step3(
     )
 
 
-def step3(data: Step2, response: bytes) -> Tuple[bytes, Step3]:
+def step3(data: Step2, response: bytes) -> tuple[bytes, Step3]:
     return _do_step3(data, response, os.urandom(272), int(time.time()))
 
 
diff --git a/client/src/telethon/_impl/mtproto/mtp/encrypted.py b/client/src/telethon/_impl/mtproto/mtp/encrypted.py
index 8eb6ec47..6f2f65dc 100644
--- a/client/src/telethon/_impl/mtproto/mtp/encrypted.py
+++ b/client/src/telethon/_impl/mtproto/mtp/encrypted.py
@@ -2,7 +2,7 @@ import logging
 import os
 import struct
 import time
-from typing import List, Optional, Tuple
+from typing import Optional
 
 from ...crypto import AuthKey, decrypt_data_v2, encrypt_data_v2
 from ...tl.core import Reader
@@ -107,12 +107,12 @@ class Encrypted(Mtp):
     ) -> None:
         self._auth_key = auth_key
         self._time_offset: int = time_offset or 0
-        self._salts: List[FutureSalt] = [
+        self._salts: list[FutureSalt] = [
             FutureSalt(valid_since=0, valid_until=0x7FFFFFFF, salt=first_salt or 0)
         ]
-        self._start_salt_time: Optional[Tuple[int, float]] = None
+        self._start_salt_time: Optional[tuple[int, float]] = None
         self._compression_threshold = compression_threshold
-        self._deserialization: List[Deserialization] = []
+        self._deserialization: list[Deserialization] = []
         self._buffer = bytearray()
         self._salt_request_msg_id: Optional[int] = None
 
@@ -141,7 +141,7 @@ class Encrypted(Mtp):
         self._client_id: int
         self._sequence: int
         self._last_msg_id: int
-        self._in_pending_ack: List[int] = []
+        self._in_pending_ack: list[int] = []
         self._msg_count: int
         self._reset_session()
 
@@ -196,7 +196,7 @@ class Encrypted(Mtp):
     def _get_current_salt(self) -> int:
         return self._salts[-1].salt if self._salts else 0
 
-    def _finalize_plain(self) -> Optional[Tuple[MsgId, bytes]]:
+    def _finalize_plain(self) -> Optional[tuple[MsgId, bytes]]:
         if not self._msg_count:
             return None
 
@@ -431,7 +431,7 @@ class Encrypted(Mtp):
 
         return self._serialize_msg(body, True)
 
-    def finalize(self) -> Optional[Tuple[MsgId, bytes]]:
+    def finalize(self) -> Optional[tuple[MsgId, bytes]]:
         result = self._finalize_plain()
         if not result:
             return None
@@ -441,7 +441,7 @@ class Encrypted(Mtp):
 
     def deserialize(
         self, payload: bytes | bytearray | memoryview
-    ) -> List[Deserialization]:
+    ) -> list[Deserialization]:
         check_message_buffer(payload)
 
         plaintext = decrypt_data_v2(payload, self._auth_key)
diff --git a/client/src/telethon/_impl/mtproto/mtp/plain.py b/client/src/telethon/_impl/mtproto/mtp/plain.py
index 70d3a827..b1fe03d2 100644
--- a/client/src/telethon/_impl/mtproto/mtp/plain.py
+++ b/client/src/telethon/_impl/mtproto/mtp/plain.py
@@ -1,5 +1,5 @@
 import struct
-from typing import List, Optional, Tuple
+from typing import Optional
 
 from ..utils import check_message_buffer
 from .types import Deserialization, MsgId, Mtp, RpcResult
@@ -23,7 +23,7 @@ class Plain(Mtp):
         self._buffer += request  # message_data
         return msg_id
 
-    def finalize(self) -> Optional[Tuple[MsgId, bytes]]:
+    def finalize(self) -> Optional[tuple[MsgId, bytes]]:
         if not self._buffer:
             return None
 
@@ -33,7 +33,7 @@ class Plain(Mtp):
 
     def deserialize(
         self, payload: bytes | bytearray | memoryview
-    ) -> List[Deserialization]:
+    ) -> list[Deserialization]:
         check_message_buffer(payload)
 
         auth_key_id, msg_id, length = struct.unpack_from("<qqi", payload)
diff --git a/client/src/telethon/_impl/mtproto/mtp/types.py b/client/src/telethon/_impl/mtproto/mtp/types.py
index 219a9de8..3798d859 100644
--- a/client/src/telethon/_impl/mtproto/mtp/types.py
+++ b/client/src/telethon/_impl/mtproto/mtp/types.py
@@ -1,7 +1,7 @@
 import logging
 import re
 from abc import ABC, abstractmethod
-from typing import List, NewType, Optional, Self, Tuple
+from typing import NewType, Optional, Self
 
 from ...tl.mtproto.types import RpcError as GeneratedRpcError
 
@@ -192,7 +192,7 @@ class Mtp(ABC):
         """
 
     @abstractmethod
-    def finalize(self) -> Optional[Tuple[MsgId, bytes]]:
+    def finalize(self) -> Optional[tuple[MsgId, bytes]]:
         """
         Finalize the buffer of serialized requests.
 
@@ -203,7 +203,7 @@ class Mtp(ABC):
     @abstractmethod
     def deserialize(
         self, payload: bytes | bytearray | memoryview
-    ) -> List[Deserialization]:
+    ) -> list[Deserialization]:
         """
         Deserialize incoming buffer payload.
         """
diff --git a/client/src/telethon/_impl/mtproto/transport/abcs.py b/client/src/telethon/_impl/mtproto/transport/abcs.py
index e64d6e08..149dc6ee 100644
--- a/client/src/telethon/_impl/mtproto/transport/abcs.py
+++ b/client/src/telethon/_impl/mtproto/transport/abcs.py
@@ -1,5 +1,5 @@
 from abc import ABC, abstractmethod
-from typing import Callable
+from collections.abc import Callable
 
 OutFn = Callable[[bytes | bytearray | memoryview], None]
 
diff --git a/client/src/telethon/_impl/mtsender/sender.py b/client/src/telethon/_impl/mtsender/sender.py
index 140d3c36..84533451 100644
--- a/client/src/telethon/_impl/mtsender/sender.py
+++ b/client/src/telethon/_impl/mtsender/sender.py
@@ -4,18 +4,9 @@ import struct
 import time
 from abc import ABC
 from asyncio import FIRST_COMPLETED, Event, Future
+from collections.abc import Iterator
 from dataclasses import dataclass
-from typing import (
-    Generic,
-    Iterator,
-    List,
-    Optional,
-    Protocol,
-    Self,
-    Tuple,
-    Type,
-    TypeVar,
-)
+from typing import Generic, Optional, Protocol, Self, Type, TypeVar
 
 from ..crypto import AuthKey
 from ..mtproto import (
@@ -127,7 +118,7 @@ class Connector(Protocol):
         The :doc:`/concepts/datacenters` concept has examples on how to combine proxy libraries with Telethon.
     """
 
-    async def __call__(self, ip: str, port: int) -> Tuple[AsyncReader, AsyncWriter]:
+    async def __call__(self, ip: str, port: int) -> tuple[AsyncReader, AsyncWriter]:
         raise NotImplementedError
 
 
@@ -175,7 +166,7 @@ class Sender:
     _transport: Transport
     _mtp: Mtp
     _mtp_buffer: bytearray
-    _requests: List[Request[object]]
+    _requests: list[Request[object]]
     _request_event: Event
     _next_ping: float
     _read_buffer: bytearray
@@ -239,7 +230,7 @@ class Sender:
             if rx.done():
                 return rx.result()
 
-    async def step(self) -> List[Updates]:
+    async def step(self) -> list[Updates]:
         self._try_fill_write()
 
         recv_req = asyncio.create_task(self._request_event.wait())
@@ -296,13 +287,13 @@ class Sender:
             self._transport.pack(mtp_buffer, self._writer.write)
             self._write_drain_pending = True
 
-    def _on_net_read(self, read_buffer: bytes) -> List[Updates]:
+    def _on_net_read(self, read_buffer: bytes) -> list[Updates]:
         if not read_buffer:
             raise ConnectionResetError("read 0 bytes")
 
         self._read_buffer += read_buffer
 
-        updates: List[Updates] = []
+        updates: list[Updates] = []
         while self._read_buffer:
             self._mtp_buffer.clear()
             try:
@@ -331,7 +322,7 @@ class Sender:
         )
         self._next_ping = asyncio.get_running_loop().time() + PING_DELAY
 
-    def _process_mtp_buffer(self, updates: List[Updates]) -> None:
+    def _process_mtp_buffer(self, updates: list[Updates]) -> None:
         results = self._mtp.deserialize(self._mtp_buffer)
 
         for result in results:
@@ -345,13 +336,13 @@ class Sender:
                 self._process_bad_message(result)
 
     def _process_update(
-        self, updates: List[Updates], update: bytes | bytearray | memoryview
+        self, updates: list[Updates], update: bytes | bytearray | memoryview
     ) -> None:
         try:
             updates.append(Updates.from_bytes(update))
         except ValueError:
             cid = struct.unpack_from("I", update)[0]
-            alt_classes: Tuple[Type[Serializable], ...] = (
+            alt_classes: tuple[Type[Serializable], ...] = (
                 AffectedFoundMessages,
                 AffectedHistory,
                 AffectedMessages,
diff --git a/client/src/telethon/_impl/session/chat/hash_cache.py b/client/src/telethon/_impl/session/chat/hash_cache.py
index decdaf27..40612c9e 100644
--- a/client/src/telethon/_impl/session/chat/hash_cache.py
+++ b/client/src/telethon/_impl/session/chat/hash_cache.py
@@ -1,4 +1,4 @@
-from typing import Any, Dict, Optional, Sequence, Tuple
+from typing import Any, Optional, Sequence
 
 from ...tl import abcs, types
 from .packed import PackedChat, PackedType
@@ -7,8 +7,8 @@ from .packed import PackedChat, PackedType
 class ChatHashCache:
     __slots__ = ("_hash_map", "_self_id", "_self_bot")
 
-    def __init__(self, self_user: Optional[Tuple[int, bool]]):
-        self._hash_map: Dict[int, Tuple[int, PackedType]] = {}
+    def __init__(self, self_user: Optional[tuple[int, bool]]):
+        self._hash_map: dict[int, tuple[int, PackedType]] = {}
         self._self_id = self_user[0] if self_user else None
         self._self_bot = self_user[1] if self_user else False
 
diff --git a/client/src/telethon/_impl/session/message_box/defs.py b/client/src/telethon/_impl/session/message_box/defs.py
index 82d328cf..3033c921 100644
--- a/client/src/telethon/_impl/session/message_box/defs.py
+++ b/client/src/telethon/_impl/session/message_box/defs.py
@@ -1,6 +1,6 @@
 import logging
 from enum import Enum
-from typing import List, Literal, Union
+from typing import Literal
 
 from ...tl import abcs
 
@@ -20,7 +20,7 @@ NO_UPDATES_TIMEOUT = 15 * 60
 
 ENTRY_ACCOUNT: Literal["ACCOUNT"] = "ACCOUNT"
 ENTRY_SECRET: Literal["SECRET"] = "SECRET"
-Entry = Union[Literal["ACCOUNT", "SECRET"], int]
+Entry = Literal["ACCOUNT", "SECRET"] | int
 
 # Python's logging doesn't define a TRACE level. Pick halfway between DEBUG and NOTSET.
 # We don't define a name for this as libraries shouldn't do that though.
@@ -64,7 +64,7 @@ class PossibleGap:
     def __init__(
         self,
         deadline: float,
-        updates: List[abcs.Update],
+        updates: list[abcs.Update],
     ) -> None:
         self.deadline = deadline
         self.updates = updates
diff --git a/client/src/telethon/_impl/session/message_box/messagebox.py b/client/src/telethon/_impl/session/message_box/messagebox.py
index b7db3455..738be714 100644
--- a/client/src/telethon/_impl/session/message_box/messagebox.py
+++ b/client/src/telethon/_impl/session/message_box/messagebox.py
@@ -2,7 +2,7 @@ import asyncio
 import datetime
 import logging
 import time
-from typing import Dict, List, Optional, Sequence, Set, Tuple
+from typing import Optional, Sequence
 
 from ...tl import Request, abcs, functions, types
 from ..chat import ChatHashCache
@@ -53,11 +53,11 @@ class MessageBox:
         base_logger: logging.Logger,
     ) -> None:
         self._logger = base_logger.getChild("messagebox")
-        self.map: Dict[Entry, State] = {}
+        self.map: dict[Entry, State] = {}
         self.date = epoch()
         self.seq = NO_SEQ
-        self.possible_gaps: Dict[Entry, PossibleGap] = {}
-        self.getting_diff_for: Set[Entry] = set()
+        self.possible_gaps: dict[Entry, PossibleGap] = {}
+        self.getting_diff_for: set[Entry] = set()
         self.next_deadline: Optional[Entry] = None
 
         if __debug__:
@@ -164,7 +164,7 @@ class MessageBox:
 
         return deadline
 
-    def reset_deadlines(self, entries: Set[Entry], deadline: float) -> None:
+    def reset_deadlines(self, entries: set[Entry], deadline: float) -> None:
         if not entries:
             return
 
@@ -259,8 +259,8 @@ class MessageBox:
         self,
         updates: abcs.Updates,
         chat_hashes: ChatHashCache,
-    ) -> Tuple[List[abcs.Update], Sequence[abcs.User], Sequence[abcs.Chat]]:
-        result: List[abcs.Update] = []
+    ) -> tuple[list[abcs.Update], Sequence[abcs.User], Sequence[abcs.Chat]]:
+        result: list[abcs.Update] = []
         combined = adapt(updates, chat_hashes)
 
         if __debug__:
@@ -290,7 +290,7 @@ class MessageBox:
         sorted_updates = list(sorted(combined.updates, key=update_sort_key))
 
         any_pts_applied = False
-        reset_deadlines_for: Set[Entry] = set()
+        reset_deadlines_for: set[Entry] = set()
         for update in sorted_updates:
             entry, applied = self.apply_pts_info(update)
             if entry is not None:
@@ -341,7 +341,7 @@ class MessageBox:
     def apply_pts_info(
         self,
         update: abcs.Update,
-    ) -> Tuple[Optional[Entry], Optional[abcs.Update]]:
+    ) -> tuple[Optional[Entry], Optional[abcs.Update]]:
         if isinstance(update, types.UpdateChannelTooLong):
             self.try_begin_get_diff(update.channel_id, "received updateChannelTooLong")
             return None, None
@@ -438,12 +438,12 @@ class MessageBox:
         self,
         diff: abcs.updates.Difference,
         chat_hashes: ChatHashCache,
-    ) -> Tuple[List[abcs.Update], Sequence[abcs.User], Sequence[abcs.Chat]]:
+    ) -> tuple[list[abcs.Update], Sequence[abcs.User], Sequence[abcs.Chat]]:
         if __debug__:
             self._trace("applying account difference: %s", diff)
 
         finish: bool
-        result: Tuple[List[abcs.Update], Sequence[abcs.User], Sequence[abcs.Chat]]
+        result: tuple[list[abcs.Update], Sequence[abcs.User], Sequence[abcs.Chat]]
         if isinstance(diff, types.updates.DifferenceEmpty):
             finish = True
             self.date = datetime.datetime.fromtimestamp(
@@ -496,7 +496,7 @@ class MessageBox:
         self,
         diff: types.updates.Difference,
         chat_hashes: ChatHashCache,
-    ) -> Tuple[List[abcs.Update], Sequence[abcs.User], Sequence[abcs.Chat]]:
+    ) -> tuple[list[abcs.Update], Sequence[abcs.User], Sequence[abcs.Chat]]:
         state = diff.state
         assert isinstance(state, types.updates.State)
         self.map[ENTRY_ACCOUNT].pts = state.pts
@@ -582,7 +582,7 @@ class MessageBox:
         channel_id: int,
         diff: abcs.updates.ChannelDifference,
         chat_hashes: ChatHashCache,
-    ) -> Tuple[List[abcs.Update], Sequence[abcs.User], Sequence[abcs.Chat]]:
+    ) -> tuple[list[abcs.Update], Sequence[abcs.User], Sequence[abcs.Chat]]:
         entry: Entry = channel_id
         if __debug__:
             self._trace("applying channel=%r difference: %s", entry, diff)
diff --git a/client/src/telethon/_impl/session/session.py b/client/src/telethon/_impl/session/session.py
index 9aa739ae..ccd46fc4 100644
--- a/client/src/telethon/_impl/session/session.py
+++ b/client/src/telethon/_impl/session/session.py
@@ -1,4 +1,4 @@
-from typing import List, Optional, Tuple
+from typing import Optional
 
 from ..tl.core.serializable import obj_repr
 
@@ -13,7 +13,7 @@ class DataCenter:
     :param auth: See below.
     """
 
-    __slots__: Tuple[str, ...] = ("id", "ipv4_addr", "ipv6_addr", "auth")
+    __slots__: tuple[str, ...] = ("id", "ipv4_addr", "ipv6_addr", "auth")
 
     def __init__(
         self,
@@ -116,7 +116,7 @@ class UpdateState:
         qts: int,
         date: int,
         seq: int,
-        channels: List[ChannelState],
+        channels: list[ChannelState],
     ) -> None:
         self.pts = pts
         "The primary partial sequence number."
@@ -165,7 +165,7 @@ class Session:
     def __init__(
         self,
         *,
-        dcs: Optional[List[DataCenter]] = None,
+        dcs: Optional[list[DataCenter]] = None,
         user: Optional[User] = None,
         state: Optional[UpdateState] = None,
     ):
diff --git a/client/src/telethon/_impl/session/storage/sqlite.py b/client/src/telethon/_impl/session/storage/sqlite.py
index a9d0ce53..2988e336 100644
--- a/client/src/telethon/_impl/session/storage/sqlite.py
+++ b/client/src/telethon/_impl/session/storage/sqlite.py
@@ -1,6 +1,6 @@
 import sqlite3
 from pathlib import Path
-from typing import Optional, Union
+from typing import Optional
 
 from ..session import ChannelState, DataCenter, Session, UpdateState, User
 from .storage import Storage
@@ -20,7 +20,7 @@ class SqliteSession(Storage):
     an VCS by accident (adding ``*.session`` to ``.gitignore`` will catch them).
     """
 
-    def __init__(self, file: Union[str, Path]):
+    def __init__(self, file: str | Path):
         path = Path(file)
         if not path.suffix:
             path = path.with_suffix(EXTENSION)
@@ -105,18 +105,22 @@ class SqliteSession(Storage):
                 DataCenter(id=id, ipv4_addr=ipv4_addr, ipv6_addr=ipv6_addr, auth=auth)
                 for (id, ipv4_addr, ipv6_addr, auth) in datacenter
             ],
-            user=User(id=user[0], dc=user[1], bot=bool(user[2]), username=user[3])
-            if user
-            else None,
-            state=UpdateState(
-                pts=state[0],
-                qts=state[1],
-                date=state[2],
-                seq=state[3],
-                channels=[ChannelState(id=id, pts=pts) for id, pts in channelstate],
-            )
-            if state
-            else None,
+            user=(
+                User(id=user[0], dc=user[1], bot=bool(user[2]), username=user[3])
+                if user
+                else None
+            ),
+            state=(
+                UpdateState(
+                    pts=state[0],
+                    qts=state[1],
+                    date=state[2],
+                    seq=state[3],
+                    channels=[ChannelState(id=id, pts=pts) for id, pts in channelstate],
+                )
+                if state
+                else None
+            ),
         )
 
     @staticmethod
diff --git a/client/src/telethon/_impl/tl/core/reader.py b/client/src/telethon/_impl/tl/core/reader.py
index c9f39458..a0d7c019 100644
--- a/client/src/telethon/_impl/tl/core/reader.py
+++ b/client/src/telethon/_impl/tl/core/reader.py
@@ -1,6 +1,7 @@
 import functools
 import struct
-from typing import TYPE_CHECKING, Any, Callable, List, Optional, Type, TypeVar
+from collections.abc import Callable
+from typing import TYPE_CHECKING, Any, Optional, Type, TypeVar
 
 if TYPE_CHECKING:
     from .serializable import Serializable
@@ -96,8 +97,8 @@ def single_deserializer(cls: Type[T]) -> Callable[[bytes], T]:
 
 
 @functools.cache
-def list_deserializer(cls: Type[T]) -> Callable[[bytes], List[T]]:
-    def deserializer(body: bytes) -> List[T]:
+def list_deserializer(cls: Type[T]) -> Callable[[bytes], list[T]]:
+    def deserializer(body: bytes) -> list[T]:
         reader = Reader(body)
         vec_id, length = reader.read_fmt("<ii", 8)
         assert vec_id == 0x1CB5C415 and length >= 0
@@ -106,14 +107,14 @@ def list_deserializer(cls: Type[T]) -> Callable[[bytes], List[T]]:
     return deserializer
 
 
-def deserialize_i64_list(body: bytes) -> List[int]:
+def deserialize_i64_list(body: bytes) -> list[int]:
     reader = Reader(body)
     vec_id, length = reader.read_fmt("<ii", 8)
     assert vec_id == 0x1CB5C415 and length >= 0
     return [*reader.read_fmt(f"<{length}q", length * 8)]
 
 
-def deserialize_i32_list(body: bytes) -> List[int]:
+def deserialize_i32_list(body: bytes) -> list[int]:
     reader = Reader(body)
     vec_id, length = reader.read_fmt("<ii", 8)
     assert vec_id == 0x1CB5C415 and length >= 0
diff --git a/client/src/telethon/_impl/tl/core/request.py b/client/src/telethon/_impl/tl/core/request.py
index bfc28f65..b053bdd4 100644
--- a/client/src/telethon/_impl/tl/core/request.py
+++ b/client/src/telethon/_impl/tl/core/request.py
@@ -1,5 +1,6 @@
 import struct
-from typing import Any, Callable, Generic, Optional, TypeVar
+from collections.abc import Callable
+from typing import Any, Generic, Optional, TypeVar
 
 Return = TypeVar("Return")
 
diff --git a/client/src/telethon/_impl/tl/core/serializable.py b/client/src/telethon/_impl/tl/core/serializable.py
index 79e64e4d..8af4e56c 100644
--- a/client/src/telethon/_impl/tl/core/serializable.py
+++ b/client/src/telethon/_impl/tl/core/serializable.py
@@ -1,12 +1,12 @@
 import abc
 import struct
-from typing import Protocol, Self, Tuple
+from typing import Protocol, Self
 
 from .reader import Reader
 
 
 class HasSlots(Protocol):
-    __slots__: Tuple[str, ...]
+    __slots__: tuple[str, ...]
 
 
 def obj_repr(self: HasSlots) -> str:
@@ -16,7 +16,7 @@ def obj_repr(self: HasSlots) -> str:
 
 
 class Serializable(abc.ABC):
-    __slots__: Tuple[str, ...] = ()
+    __slots__: tuple[str, ...] = ()
 
     @classmethod
     @abc.abstractmethod
diff --git a/client/tests/mtproto_test.py b/client/tests/mtproto_test.py
index 4f0fd518..a0734a3d 100644
--- a/client/tests/mtproto_test.py
+++ b/client/tests/mtproto_test.py
@@ -1,5 +1,5 @@
 import struct
-from typing import Optional, Tuple
+from typing import Optional
 
 from pytest import raises
 from telethon._impl.crypto import AuthKey
@@ -49,7 +49,7 @@ def test_rpc_error_parsing() -> None:
 PLAIN_REQUEST = b"Hey!"
 
 
-def unwrap_finalize(finalized: Optional[Tuple[MsgId, bytes]]) -> bytes:
+def unwrap_finalize(finalized: Optional[tuple[MsgId, bytes]]) -> bytes:
     assert finalized is not None
     _, buffer = finalized
     return buffer
diff --git a/client/tests/transport/abridged_test.py b/client/tests/transport/abridged_test.py
index a8683f7a..d3b425ab 100644
--- a/client/tests/transport/abridged_test.py
+++ b/client/tests/transport/abridged_test.py
@@ -1,5 +1,3 @@
-from typing import Tuple
-
 from pytest import raises
 from telethon._impl.mtproto import Abridged
 
@@ -11,7 +9,7 @@ class Output(bytearray):
         self += data
 
 
-def setup_pack(n: int) -> Tuple[Abridged, bytes, Output]:
+def setup_pack(n: int) -> tuple[Abridged, bytes, Output]:
     input = bytes(x & 0xFF for x in range(n))
     return Abridged(), input, Output()
 
diff --git a/client/tests/transport/full_test.py b/client/tests/transport/full_test.py
index 767050b3..79441a86 100644
--- a/client/tests/transport/full_test.py
+++ b/client/tests/transport/full_test.py
@@ -1,5 +1,3 @@
-from typing import Tuple
-
 from pytest import raises
 from telethon._impl.mtproto import Full
 
@@ -11,12 +9,12 @@ class Output(bytearray):
         self += data
 
 
-def setup_pack(n: int) -> Tuple[Full, bytes, Output]:
+def setup_pack(n: int) -> tuple[Full, bytes, Output]:
     input = bytes(x & 0xFF for x in range(n))
     return Full(), input, Output()
 
 
-def setup_unpack(n: int) -> Tuple[bytes, Full, bytes, bytearray]:
+def setup_unpack(n: int) -> tuple[bytes, Full, bytes, bytearray]:
     transport, expected_output, input = setup_pack(n)
     transport.pack(expected_output, input)
 
diff --git a/client/tests/transport/intermediate_test.py b/client/tests/transport/intermediate_test.py
index 10b10e44..e9d55f39 100644
--- a/client/tests/transport/intermediate_test.py
+++ b/client/tests/transport/intermediate_test.py
@@ -1,5 +1,3 @@
-from typing import Tuple
-
 from pytest import raises
 from telethon._impl.mtproto import Intermediate
 
@@ -11,7 +9,7 @@ class Output(bytearray):
         self += data
 
 
-def setup_pack(n: int) -> Tuple[Intermediate, bytes, Output]:
+def setup_pack(n: int) -> tuple[Intermediate, bytes, Output]:
     input = bytes(x & 0xFF for x in range(n))
     return Intermediate(), input, Output()
 
diff --git a/generator/src/telethon_generator/_impl/codegen/fakefs.py b/generator/src/telethon_generator/_impl/codegen/fakefs.py
index 71512c02..5ff30311 100644
--- a/generator/src/telethon_generator/_impl/codegen/fakefs.py
+++ b/generator/src/telethon_generator/_impl/codegen/fakefs.py
@@ -1,11 +1,10 @@
 import weakref
 from pathlib import Path
-from typing import Dict
 
 
 class FakeFs:
     def __init__(self) -> None:
-        self._files: Dict[Path, bytearray] = {}
+        self._files: dict[Path, bytearray] = {}
 
     def open(self, path: Path) -> "SourceWriter":
         return SourceWriter(self, path)
diff --git a/generator/src/telethon_generator/_impl/codegen/generator.py b/generator/src/telethon_generator/_impl/codegen/generator.py
index 695ca444..d3fbe128 100644
--- a/generator/src/telethon_generator/_impl/codegen/generator.py
+++ b/generator/src/telethon_generator/_impl/codegen/generator.py
@@ -1,5 +1,4 @@
 from pathlib import Path
-from typing import Set
 
 from ..tl_parser import NormalParameter, ParsedTl
 from .fakefs import FakeFs, SourceWriter
@@ -19,7 +18,7 @@ from .serde.serialization import generate_function, generate_write
 
 
 def generate_init(
-    writer: SourceWriter, namespaces: Set[str], classes: Set[str]
+    writer: SourceWriter, namespaces: set[str], classes: set[str]
 ) -> None:
     sorted_cls = list(sorted(classes))
     sorted_ns = list(sorted(namespaces))
@@ -46,14 +45,14 @@ def generate(fs: FakeFs, tl: ParsedTl) -> None:
 
     ignored_types = {"true", "boolTrue", "boolFalse"}  # also "compiler built-ins"
 
-    abc_namespaces: Set[str] = set()
-    type_namespaces: Set[str] = set()
-    function_namespaces: Set[str] = set()
+    abc_namespaces: set[str] = set()
+    type_namespaces: set[str] = set()
+    function_namespaces: set[str] = set()
 
-    abc_class_names: Set[str] = set()
-    type_class_names: Set[str] = set()
-    function_def_names: Set[str] = set()
-    generated_type_names: Set[str] = set()
+    abc_class_names: set[str] = set()
+    type_class_names: set[str] = set()
+    function_def_names: set[str] = set()
+    generated_type_names: set[str] = set()
 
     for typedef in tl.typedefs:
         if typedef.ty.full_name not in generated_types:
@@ -193,10 +192,10 @@ def generate(fs: FakeFs, tl: ParsedTl) -> None:
     writer.write(
         "from .core import Serializable, Reader, deserialize_bool, deserialize_i32_list, deserialize_i64_list, deserialize_identity, single_deserializer, list_deserializer"
     )
-    writer.write("from typing import cast, Tuple, Type")
+    writer.write("from typing import cast, Type")
     writer.write(f"LAYER = {tl.layer!r}")
     writer.write(
-        "TYPE_MAPPING = {t.constructor_id(): t for t in cast(Tuple[Type[Serializable]], ("
+        "TYPE_MAPPING = {t.constructor_id(): t for t in cast(tuple[Type[Serializable]], ("
     )
     for name in sorted(generated_type_names):
         writer.write(f"  types.{name},")
diff --git a/generator/src/telethon_generator/_impl/codegen/serde/common.py b/generator/src/telethon_generator/_impl/codegen/serde/common.py
index 5974b8c7..0269af53 100644
--- a/generator/src/telethon_generator/_impl/codegen/serde/common.py
+++ b/generator/src/telethon_generator/_impl/codegen/serde/common.py
@@ -1,10 +1,10 @@
 import re
-from typing import Iterator, List
+from collections.abc import Iterator
 
 from ....tl_parser import BaseParameter, FlagsParameter, NormalParameter, Type
 
 
-def split_words(name: str) -> List[str]:
+def split_words(name: str) -> list[str]:
     return re.findall(
         r"""
         ^$
diff --git a/generator/src/telethon_generator/_impl/codegen/serde/deserialization.py b/generator/src/telethon_generator/_impl/codegen/serde/deserialization.py
index d417a82b..a5aa2d8b 100644
--- a/generator/src/telethon_generator/_impl/codegen/serde/deserialization.py
+++ b/generator/src/telethon_generator/_impl/codegen/serde/deserialization.py
@@ -1,6 +1,6 @@
 import struct
 from itertools import groupby
-from typing import Optional, Tuple
+from typing import Optional
 
 from ....tl_parser import Definition, NormalParameter, Parameter, Type
 from ..fakefs import SourceWriter
@@ -14,7 +14,7 @@ SPECIAL_CASED_OBJECT_READS = {
 }
 
 
-def reader_read_fmt(ty: Type, constructor_id: int) -> Tuple[str, Optional[str]]:
+def reader_read_fmt(ty: Type, constructor_id: int) -> tuple[str, Optional[str]]:
     if is_trivial(NormalParameter(ty=ty, flag=None)):
         fmt = trivial_struct_fmt(NormalParameter(ty=ty, flag=None))
         size = struct.calcsize(f"<{fmt}")
diff --git a/generator/src/telethon_generator/_impl/codegen/serde/serialization.py b/generator/src/telethon_generator/_impl/codegen/serde/serialization.py
index 3b32087d..792893c9 100644
--- a/generator/src/telethon_generator/_impl/codegen/serde/serialization.py
+++ b/generator/src/telethon_generator/_impl/codegen/serde/serialization.py
@@ -1,6 +1,6 @@
 import struct
+from collections.abc import Iterator
 from itertools import groupby
-from typing import Iterator
 
 from ....tl_parser import Definition, FlagsParameter, NormalParameter, Parameter, Type
 from ..fakefs import SourceWriter
@@ -104,9 +104,11 @@ def generate_write(writer: SourceWriter, defn: Definition) -> None:
             for param in group:
                 if isinstance(param.ty, FlagsParameter):
                     flags = " | ".join(
-                        f"({1 << p.ty.flag.index} if self.{p.name} else 0)"
-                        if p.ty.ty.name == "true"
-                        else f"(0 if self.{p.name} is None else {1 << p.ty.flag.index})"
+                        (
+                            f"({1 << p.ty.flag.index} if self.{p.name} else 0)"
+                            if p.ty.ty.name == "true"
+                            else f"(0 if self.{p.name} is None else {1 << p.ty.flag.index})"
+                        )
                         for p in defn.params
                         if isinstance(p.ty, NormalParameter)
                         and p.ty.flag
@@ -140,9 +142,11 @@ def generate_function(writer: SourceWriter, defn: Definition) -> None:
             for param in group:
                 if isinstance(param.ty, FlagsParameter):
                     flags = " | ".join(
-                        f"({1 << p.ty.flag.index} if {p.name} else 0)"
-                        if p.ty.ty.name == "true"
-                        else f"(0 if {p.name} is None else {1 << p.ty.flag.index})"
+                        (
+                            f"({1 << p.ty.flag.index} if {p.name} else 0)"
+                            if p.ty.ty.name == "true"
+                            else f"(0 if {p.name} is None else {1 << p.ty.flag.index})"
+                        )
                         for p in defn.params
                         if isinstance(p.ty, NormalParameter)
                         and p.ty.flag
diff --git a/generator/src/telethon_generator/_impl/tl_parser/loader.py b/generator/src/telethon_generator/_impl/tl_parser/loader.py
index 81ffdebe..70185de7 100644
--- a/generator/src/telethon_generator/_impl/tl_parser/loader.py
+++ b/generator/src/telethon_generator/_impl/tl_parser/loader.py
@@ -1,7 +1,7 @@
 import re
 from dataclasses import dataclass
 from pathlib import Path
-from typing import List, Optional, Union
+from typing import Optional
 
 from .tl import Definition
 from .tl_iterator import FunctionDef, TypeDef, iterate
@@ -10,13 +10,13 @@ from .tl_iterator import FunctionDef, TypeDef, iterate
 @dataclass
 class ParsedTl:
     layer: Optional[int]
-    typedefs: List[Definition]
-    functiondefs: List[Definition]
+    typedefs: list[Definition]
+    functiondefs: list[Definition]
 
 
-def load_tl_file(path: Union[str, Path]) -> ParsedTl:
-    typedefs: List[TypeDef] = []
-    functiondefs: List[FunctionDef] = []
+def load_tl_file(path: str | Path) -> ParsedTl:
+    typedefs: list[TypeDef] = []
+    functiondefs: list[FunctionDef] = []
     with open(path, "r", encoding="utf-8") as fd:
         contents = fd.read()
 
diff --git a/generator/src/telethon_generator/_impl/tl_parser/tl/definition.py b/generator/src/telethon_generator/_impl/tl_parser/tl/definition.py
index 479bfa14..70adf636 100644
--- a/generator/src/telethon_generator/_impl/tl_parser/tl/definition.py
+++ b/generator/src/telethon_generator/_impl/tl_parser/tl/definition.py
@@ -1,5 +1,5 @@
 from dataclasses import dataclass
-from typing import List, Self, Set
+from typing import Self
 
 from ..utils import infer_id
 from .parameter import Parameter, TypeDefNotImplemented
@@ -9,10 +9,10 @@ from .ty import Type
 
 @dataclass
 class Definition:
-    namespace: List[str]
+    namespace: list[str]
     name: str
     id: int
-    params: List[Parameter]
+    params: list[Parameter]
     ty: Type
 
     @classmethod
@@ -58,9 +58,9 @@ class Definition:
             except ValueError:
                 raise ValueError("invalid id")
 
-        type_defs: List[str] = []
-        flag_defs: List[str] = []
-        params: List[Parameter] = []
+        type_defs: list[str] = []
+        flag_defs: list[str] = []
+        params: list[Parameter] = []
 
         for param_str in middle.split():
             try:
@@ -102,7 +102,7 @@ class Definition:
             res += f"{ns}."
         res += f"{self.name}#{self.id:x}"
 
-        def_set: Set[str] = set()
+        def_set: set[str] = set()
         for param in self.params:
             if isinstance(param.ty, NormalParameter):
                 def_set.update(param.ty.ty.find_generic_refs())
diff --git a/generator/src/telethon_generator/_impl/tl_parser/tl/parameter_type.py b/generator/src/telethon_generator/_impl/tl_parser/tl/parameter_type.py
index f7a3c584..252d148e 100644
--- a/generator/src/telethon_generator/_impl/tl_parser/tl/parameter_type.py
+++ b/generator/src/telethon_generator/_impl/tl_parser/tl/parameter_type.py
@@ -1,6 +1,8 @@
+from __future__ import annotations
+
 from abc import ABC
 from dataclasses import dataclass
-from typing import Optional, Union
+from typing import Optional
 
 from .flag import Flag
 from .ty import Type
@@ -8,7 +10,7 @@ from .ty import Type
 
 class BaseParameter(ABC):
     @staticmethod
-    def from_str(ty: str) -> Union["FlagsParameter", "NormalParameter"]:
+    def from_str(ty: str) -> FlagsParameter | NormalParameter:
         if not ty:
             raise ValueError("empty")
         if ty == "#":
diff --git a/generator/src/telethon_generator/_impl/tl_parser/tl/ty.py b/generator/src/telethon_generator/_impl/tl_parser/tl/ty.py
index cbc70656..b12d86d4 100644
--- a/generator/src/telethon_generator/_impl/tl_parser/tl/ty.py
+++ b/generator/src/telethon_generator/_impl/tl_parser/tl/ty.py
@@ -1,10 +1,11 @@
+from collections.abc import Iterator
 from dataclasses import dataclass
-from typing import Iterator, List, Optional, Self
+from typing import Optional, Self
 
 
 @dataclass
 class Type:
-    namespace: List[str]
+    namespace: list[str]
     name: str
     bare: bool
     generic_ref: bool
diff --git a/generator/src/telethon_generator/_impl/tl_parser/tl_iterator.py b/generator/src/telethon_generator/_impl/tl_parser/tl_iterator.py
index a7c0670e..aba60878 100644
--- a/generator/src/telethon_generator/_impl/tl_parser/tl_iterator.py
+++ b/generator/src/telethon_generator/_impl/tl_parser/tl_iterator.py
@@ -1,4 +1,5 @@
-from typing import Iterator, Type
+from collections.abc import Iterator
+from typing import Type
 
 from .tl.definition import Definition
 from .utils import remove_tl_comments
diff --git a/generator/tests/common_test.py b/generator/tests/common_test.py
index 9ee3c4df..f94be28d 100644
--- a/generator/tests/common_test.py
+++ b/generator/tests/common_test.py
@@ -1,5 +1,3 @@
-from typing import List
-
 from pytest import mark
 from telethon_generator._impl.codegen.serde.common import (
     split_words,
@@ -19,7 +17,7 @@ from telethon_generator._impl.codegen.serde.common import (
         ("fileMp4", ["file", "Mp4"]),
     ],
 )
-def test_split_name_words(name: str, expected: List[str]) -> None:
+def test_split_name_words(name: str, expected: list[str]) -> None:
     assert split_words(name) == expected
 
 
diff --git a/generator/tests/generator_test.py b/generator/tests/generator_test.py
index 9b743412..949a3179 100644
--- a/generator/tests/generator_test.py
+++ b/generator/tests/generator_test.py
@@ -1,17 +1,17 @@
-from typing import List, Optional
+from typing import Optional
 
 from telethon_generator.codegen import FakeFs, generate
 from telethon_generator.tl_parser import Definition, ParsedTl, parse_tl_file
 
 
-def get_definitions(contents: str) -> List[Definition]:
+def get_definitions(contents: str) -> list[Definition]:
     return [defn for defn in parse_tl_file(contents) if not isinstance(defn, Exception)]
 
 
 def gen_py_code(
     *,
-    typedefs: Optional[List[Definition]] = None,
-    functiondefs: Optional[List[Definition]] = None,
+    typedefs: Optional[list[Definition]] = None,
+    functiondefs: Optional[list[Definition]] = None,
 ) -> str:
     fs = FakeFs()
     generate(
diff --git a/tools/copy_client_signatures.py b/tools/copy_client_signatures.py
index 92cf2720..33c76817 100644
--- a/tools/copy_client_signatures.py
+++ b/tools/copy_client_signatures.py
@@ -15,12 +15,11 @@ import ast
 import subprocess
 import sys
 from pathlib import Path
-from typing import Dict, List, Union
 
 
 class FunctionMethodsVisitor(ast.NodeVisitor):
     def __init__(self) -> None:
-        self.methods: List[Union[ast.FunctionDef, ast.AsyncFunctionDef]] = []
+        self.methods: list[ast.FunctionDef | ast.AsyncFunctionDef] = []
 
     def visit_FunctionDef(self, node: ast.FunctionDef) -> None:
         self._try_add_def(node)
@@ -28,7 +27,7 @@ class FunctionMethodsVisitor(ast.NodeVisitor):
     def visit_AsyncFunctionDef(self, node: ast.AsyncFunctionDef) -> None:
         self._try_add_def(node)
 
-    def _try_add_def(self, node: Union[ast.FunctionDef, ast.AsyncFunctionDef]) -> None:
+    def _try_add_def(self, node: ast.FunctionDef | ast.AsyncFunctionDef) -> None:
         match node.args.args:
             case [ast.arg(arg="self", annotation=ast.Name(id="Client")), *_]:
                 self.methods.append(node)
@@ -39,7 +38,7 @@ class FunctionMethodsVisitor(ast.NodeVisitor):
 class MethodVisitor(ast.NodeVisitor):
     def __init__(self) -> None:
         self._in_client = False
-        self.method_docs: Dict[str, str] = {}
+        self.method_docs: dict[str, str] = {}
 
     def visit_ClassDef(self, node: ast.ClassDef) -> None:
         if node.name == "Client":
@@ -55,7 +54,7 @@ class MethodVisitor(ast.NodeVisitor):
     def visit_AsyncFunctionDef(self, node: ast.AsyncFunctionDef) -> None:
         self._try_add_doc(node)
 
-    def _try_add_doc(self, node: Union[ast.FunctionDef, ast.AsyncFunctionDef]) -> None:
+    def _try_add_doc(self, node: ast.FunctionDef | ast.AsyncFunctionDef) -> None:
         if not self._in_client:
             return
 
@@ -86,10 +85,10 @@ def main() -> None:
 
     m_visitor.visit(ast.parse(contents))
 
-    class_body: List[ast.stmt] = []
+    class_body: list[ast.stmt] = []
 
     for function in sorted(fm_visitor.methods, key=lambda f: f.name):
-        function_body: List[ast.stmt] = []
+        function_body: list[ast.stmt] = []
         if doc := m_visitor.method_docs.get(function.name):
             function.body.append(ast.Expr(value=ast.Constant(value=doc)))
 
diff --git a/tools/copy_init_imports.py b/tools/copy_init_imports.py
index 2dbfd70a..023a6c5c 100644
--- a/tools/copy_init_imports.py
+++ b/tools/copy_init_imports.py
@@ -7,12 +7,11 @@ import ast
 import os
 import re
 from pathlib import Path
-from typing import List
 
 
 class ImportVisitor(ast.NodeVisitor):
     def __init__(self) -> None:
-        self.imported_names: List[str] = []
+        self.imported_names: list[str] = []
 
     def visit_ImportFrom(self, node: ast.ImportFrom) -> None:
         if node.level == 1:
@@ -26,7 +25,7 @@ def main() -> None:
         rf"(tl|mtproto){re.escape(os.path.sep)}(abcs|functions|types)"
     )
 
-    files: List[str] = []
+    files: list[str] = []
     for file in impl_root.rglob("__init__.py"):
         file_str = str(file)
         if autogenerated_re.search(file_str):
diff --git a/typings/pyaes.pyi b/typings/pyaes.pyi
index 04ed6293..8af09e3c 100644
--- a/typings/pyaes.pyi
+++ b/typings/pyaes.pyi
@@ -1,6 +1,4 @@
-from typing import List
-
 class AES:
     def __init__(self, key: bytes) -> None: ...
-    def encrypt(self, plaintext: List[int]) -> List[int]: ...
-    def decrypt(self, ciphertext: List[int]) -> List[int]: ...
+    def encrypt(self, plaintext: list[int]) -> list[int]: ...
+    def decrypt(self, ciphertext: list[int]) -> list[int]: ...
diff --git a/typings/setuptools.build_meta.pyi b/typings/setuptools.build_meta.pyi
index 1a6ea948..da6518c9 100644
--- a/typings/setuptools.build_meta.pyi
+++ b/typings/setuptools.build_meta.pyi
@@ -1,15 +1,15 @@
-from typing import Any, Dict, Optional
+from typing import Any, Optional
 
 def build_wheel(
     wheel_directory: str,
-    config_settings: Optional[Dict[Any, Any]] = None,
+    config_settings: Optional[dict[Any, Any]] = None,
     metadata_directory: Optional[str] = None,
 ) -> str: ...
 def build_sdist(
-    sdist_directory: str, config_settings: Optional[Dict[Any, Any]] = None
+    sdist_directory: str, config_settings: Optional[dict[Any, Any]] = None
 ) -> str: ...
 def build_editable(
     wheel_directory: str,
-    config_settings: Optional[Dict[Any, Any]] = None,
+    config_settings: Optional[dict[Any, Any]] = None,
     metadata_directory: Optional[str] = None,
 ) -> str: ...
diff --git a/typings/setuptools.pyi b/typings/setuptools.pyi
index d6af5577..e3794c75 100644
--- a/typings/setuptools.pyi
+++ b/typings/setuptools.pyi
@@ -1,19 +1,19 @@
-from typing import Any, Dict, Optional
+from typing import Any, Optional
 
 class build_meta:
     @staticmethod
     def build_wheel(
         wheel_directory: str,
-        config_settings: Optional[Dict[Any, Any]] = None,
+        config_settings: Optional[dict[Any, Any]] = None,
         metadata_directory: Optional[str] = None,
     ) -> str: ...
     @staticmethod
     def build_sdist(
-        sdist_directory: str, config_settings: Optional[Dict[Any, Any]] = None
+        sdist_directory: str, config_settings: Optional[dict[Any, Any]] = None
     ) -> str: ...
     @staticmethod
     def build_editable(
         wheel_directory: str,
-        config_settings: Optional[Dict[Any, Any]] = None,
+        config_settings: Optional[dict[Any, Any]] = None,
         metadata_directory: Optional[str] = None,
     ) -> str: ...