diff --git a/admin_manual/configuration_server/occ_command.rst b/admin_manual/configuration_server/occ_command.rst
index ae850528a..798ca0e0f 100644
--- a/admin_manual/configuration_server/occ_command.rst
+++ b/admin_manual/configuration_server/occ_command.rst
@@ -881,6 +881,7 @@ backups and other tasks that require locking users out until you are finished::
   maintenance:mimetype:update-js      Update mimetypelist.js
   maintenance:mode                    set maintenance mode
   maintenance:repair                  repair this installation
+  maintenance:theme:update            Apply custom theme changes
   maintenance:update:htaccess         Updates the .htaccess file
 
 ``maintenance:mode`` locks the sessions of all logged-in users, including 
@@ -908,6 +909,8 @@ command after modifying ``config/mimetypemapping.json``. If you change a
 mimetype, run ``maintenance:mimetype:update-db --repair-filecache`` to apply the 
 change to existing files.
 
+Run the ``maintenance:theme:update`` command if the icons of your custom theme are not updated correctly. This updates the mimetypelist.js and cleares the image cache.
+
 .. _security_commands_label:
 
 Security