diff --git a/server/pkg/builtin/manifest.yml b/server/pkg/builtin/manifest.yml
index 2d26b657f3..52eb56ed13 100644
--- a/server/pkg/builtin/manifest.yml
+++ b/server/pkg/builtin/manifest.yml
@@ -2303,6 +2303,9 @@ extensions:
               type: number
               suffix: px
               defaultValue: 20
+        - id: background
+          title: background Setting
+          type: string
         - id: title
           title: Title Setting
           fields: