diff --git a/DHL/Entity/GB/ShipmentRequest.php b/DHL/Entity/GB/ShipmentRequest.php
index c87d77c..23e42ae 100644
--- a/DHL/Entity/GB/ShipmentRequest.php
+++ b/DHL/Entity/GB/ShipmentRequest.php
@@ -52,7 +52,7 @@ class ShipmentRequest extends Base
      * @var string
      * The schema version
      */
-    protected $_schemaVersion = '1.0';
+    protected $_schemaVersion = '6.0';
 
     /**
      * Display the schema version