diff --git a/centos.sh b/centos.sh
index b200677..5c63d31 100644
--- a/centos.sh
+++ b/centos.sh
@@ -28,7 +28,7 @@ timed(){
                 ntpdate ntp.aliyun.com
         else
                 yum -y install ntpdate &> /dev/null
-                ntpdate ntp.aliyun.com
+                ntpdate ntp1.aliyun.com
 fi
 }
 user(){