diff --git a/src/CourseService/JsonRpcInterface/CourseVideoInterface.php b/src/CourseService/JsonRpcInterface/CourseVideoInterface.php
index 92a2856..e1889cd 100644
--- a/src/CourseService/JsonRpcInterface/CourseVideoInterface.php
+++ b/src/CourseService/JsonRpcInterface/CourseVideoInterface.php
@@ -65,4 +65,12 @@ interface CourseVideoInterface
      * @param int $userId 用户ID
      */
     public function addVideoBrowse(int $id, int $userId);
+
+    /**
+     * 修改课程视频是否可下载
+     * @param int $id 课程视频ID
+     * @param int $canDownload 是否可下载 0-不可下载 1-可下载
+     * @return void
+     */
+    public function updateCanDownload(int $id, int $canDownload): void;
 }