diff --git a/README.md b/README.md
index f83104d..75c8617 100644
--- a/README.md
+++ b/README.md
@@ -8,4 +8,6 @@ Following this tutorial: [C Game Engine from Scratch | 01 Setup and Window](http
 brew install sdl2 sdl2_mixer freetype
 
 ## credits
-SDL: https://github.com/libsdl-org/SDL
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+SDL: https://github.com/libsdl-org/SDL
+SDL_MIXER: https://github.com/libsdl-org/SDL_mixer
+FreeType: https://gitlab.freedesktop.org/freetype/freetype
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