diff --git a/todo.txt b/todo.txt
index e76ecee6e..6e0a5f0f4 100644
--- a/todo.txt
+++ b/todo.txt
@@ -46,3 +46,5 @@ TODO, which will get actually done
 - GemRB: update.
 
 - OpenTTD: tutorial.
+
+- Add glshim library: https://github.com/lunixbochs/glshim