diff --git a/README.md b/README.md
index 274d368..c977bc6 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,13 @@
 # curl-impersonate-win
-A special build of curl that can impersonate Chrome (Windows only)
+
+A special build of curl that can impersonate Chrome (Windows only).
+
+Original idea and patches from https://github.com/lwthiker/curl-impersonate
+
+# Environment
+MSYS2 is needed to build binaries. Steps:
+1. Download and install MSYS2 (https://www.msys2.org/)
+2. Run MSYS2 from start menu and update packages with command: `pacman -Suy`
+3. Install additional packages: `pacman -S mingw-w64-x86_64-make mingw-w64-x86_64-cmake mingw-w64-x86_64-nasm mingw-w64-x86_64-gcc`
+
+# Build