diff --git a/lib/OpenCloud/Networking/Resource/Port.php b/lib/OpenCloud/Networking/Resource/Port.php
index bc7ee4dd0..ee58bc0e9 100644
--- a/lib/OpenCloud/Networking/Resource/Port.php
+++ b/lib/OpenCloud/Networking/Resource/Port.php
@@ -78,7 +78,8 @@ class Port extends PersistentResource
 
     protected $updateKeys = array(
         'name',
-        'deviceId'
+        'deviceId',
+        'securityGroups'
     );
 
     /**