diff --git a/config/sync/core.extension.yml b/config/sync/core.extension.yml
index c900206..2db2de1 100644
--- a/config/sync/core.extension.yml
+++ b/config/sync/core.extension.yml
@@ -37,6 +37,7 @@ module:
   datetime_range: 0
   dblog: 0
   default_content: 0
+  diff: 0
   drutopia_action: 0
   drutopia_article: 0
   drutopia_blog: 0