diff --git a/HttpServer/Events/OnWorkerStart.php b/HttpServer/Events/OnWorkerStart.php
index 088636fe..bfa7b0e0 100644
--- a/HttpServer/Events/OnWorkerStart.php
+++ b/HttpServer/Events/OnWorkerStart.php
@@ -104,7 +104,7 @@ class OnWorkerStart extends Callback
 			if (!Snowflake::app()->isRun()) {
 				break;
 			}
-			sleep(1);
+			Coroutine::sleep(1);
 		}
 		return $server->stop($worker_id);
 	}