diff --git a/Installation.md b/Installation.md
index 66a0114..2a0ad11 100644
--- a/Installation.md
+++ b/Installation.md
@@ -1,3 +1,9 @@
+# Prerequisites
+
+Ebiten uses `github.com/go-gl/glfw` and as such requires some setup to use OpenGL. See [Installation Steps](https://github.com/go-gl/glfw/blob/master/README.md#installation) for `go-gl/glfw`.
+
+# Install
+
 Let's get the Ebiten source code and compile it.
 
 ```sh