diff --git a/Frontend/MoptPaymentPayone/Components/Payone/ClientApi/Service/GenerateHash.php b/Frontend/MoptPaymentPayone/Components/Payone/ClientApi/Service/GenerateHash.php
index 8cd55bc8..76049cfb 100755
--- a/Frontend/MoptPaymentPayone/Components/Payone/ClientApi/Service/GenerateHash.php
+++ b/Frontend/MoptPaymentPayone/Components/Payone/ClientApi/Service/GenerateHash.php
@@ -102,7 +102,7 @@ public function generate(Payone_ClientApi_Request_Interface $request, $securityK
             $hashString .= $requestData[$key];
         }
         $hashString .= $securityKey;
-        $hash = md5($hashString);
+        $hash = hash('sha384',$hashString);
         return $hash;
     }
 }