diff --git a/docs/development/custom/index.md b/docs/development/custom/index.md
index 95510c0c..ca5feb6d 100644
--- a/docs/development/custom/index.md
+++ b/docs/development/custom/index.md
@@ -11,4 +11,5 @@ This section describes how to extend **Alliance Auth** with custom apps, service
     menu-hooks
     url-hooks
     logging
+    css-framework
 ```