diff --git a/api/@ohos.request.d.ts b/api/@ohos.request.d.ts
index 6448870519c5cbbede3397e5ed71d1ae7299d70d..a7a25b84a30c7a183d529cb7ed11684638770013 100644
--- a/api/@ohos.request.d.ts
+++ b/api/@ohos.request.d.ts
@@ -340,6 +340,12 @@ declare namespace request {
      * @permission ohos.permission.INTERNET
      */
     title?: string;
+    /**
+     * Allow download background task notifications.
+     *
+     * @since 9
+     */
+    background?: boolean;
   }
 
   /**