diff --git a/src/plugin/admin/app/common/Util.php b/src/plugin/admin/app/common/Util.php
index 1f674e9..31f4cd6 100644
--- a/src/plugin/admin/app/common/Util.php
+++ b/src/plugin/admin/app/common/Util.php
@@ -8,6 +8,8 @@ use Illuminate\Database\Schema\Builder;
 use plugin\admin\app\model\Option;
 use support\exception\BusinessException;
 use support\Db;
+use Workerman\Timer;
+use Workerman\Worker;
 
 class Util
 {