diff --git a/_Sidebar.md b/_Sidebar.md
index 123454a..86d2d9a 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -1,6 +1,7 @@
 ## Index
 * [autostart](https://codeberg.org/dwl/dwl-patches/wiki/autostart)
 * [coredump](https://codeberg.org/dwl/dwl-patches/wiki/coredump)
+* [client-opacity](https://codeberg.org/dwl/dwl-patches/wiki/client-opacity.-)
 * [hide-behind-fullscreen](https://codeberg.org/dwl/dwl-patches/wiki/hide-behind-fullscreen.-)
 * [hide-behind-monocle](https://codeberg.org/dwl/dwl-patches/wiki/hide-behind-monocle.-)
 * [keycodes](https://codeberg.org/dwl/dwl-patches/wiki/keycodes)