diff --git a/_Sidebar.md b/_Sidebar.md
index 5cd8180..e75f45f 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -1,6 +1,7 @@
 e107 v2.x
 
 * [Setup Guide](https://github.com/e107inc/e107/wiki/Setup-Guide)
+  * Cache
 
 * [User Guide](https://github.com/e107inc/e107/wiki/User-Guide)