diff --git a/_Sidebar.md b/_Sidebar.md
index cb2e1f1..36ca997 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -37,6 +37,7 @@
 * [LDAP](https://github.com/wekan/wekan/wiki/LDAP)
 * [OAuth2](https://github.com/wekan/wekan/wiki/OAuth2) and Auth0
 * [IFTTT](https://github.com/wekan/wekan/wiki/IFTTT)
+* [Custom CSS themes](https://github.com/wekan/wekan/wiki/Custom-CSS-themes)
 * [Custom Fields](https://github.com/wekan/wekan/wiki/Custom-Fields)
 * [Due Date](https://github.com/wekan/wekan/wiki/Due-Date)
 * [Forgot Password](https://github.com/wekan/wekan/wiki/Forgot-Password)