diff --git a/kernel/api/router.go b/kernel/api/router.go
index edd133c66..7ef2942c0 100644
--- a/kernel/api/router.go
+++ b/kernel/api/router.go
@@ -147,6 +147,7 @@ func ServeAPI(ginServer *gin.Engine) {
 	ginServer.Handle("POST", "/api/block/updateBlock", model.CheckAuth, updateBlock)
 	ginServer.Handle("POST", "/api/block/deleteBlock", model.CheckAuth, deleteBlock)
 	ginServer.Handle("POST", "/api/block/setBlockReminder", model.CheckAuth, setBlockReminder)
+	ginServer.Handle("POST", "/api/block/getHeadingLevelTransaction", model.CheckAuth, getHeadingLevelTransaction)
 
 	ginServer.Handle("POST", "/api/file/getFile", model.CheckAuth, getFile)
 	ginServer.Handle("POST", "/api/file/putFile", model.CheckAuth, putFile)