diff --git a/README b/README
index b6efba7..cdfd434 100644
--- a/README
+++ b/README
@@ -1 +1,3 @@
 Five OpenGL programs, some of which appear to crash on specific hardware. Cycle through each test with the `TEST` macro (e.g. `-DTEST=3`)
+
+GLFW 3 is required to compile; GLAD is embedded in `gl.h`.