diff --git a/jobs/ddns.php b/jobs/ddns.php
index 39d62b9..d32a819 100644
--- a/jobs/ddns.php
+++ b/jobs/ddns.php
@@ -29,7 +29,7 @@ try {
 }
 
 
-$realIp = shell_exec('curl -s ip.sb');
+$realIp = shell_exec('curl -s -4 ip.sb');
 $realIp = str_replace("\n", "", $realIp);
 
 if (!empty($realIp)) {