diff --git a/src/Rest/CheckoutTemplates.php b/src/Rest/CheckoutTemplates.php
index 07f38e0..4d963dd 100644
--- a/src/Rest/CheckoutTemplates.php
+++ b/src/Rest/CheckoutTemplates.php
@@ -30,13 +30,12 @@ public function __construct(RvvupClient $client)
 
     /**
      * @param CheckoutTemplateCreateInput $input
-     * @param string|null $idempotencyKey
      * @return CheckoutTemplate
      * @throws ApiException
      */
-    public function create(CheckoutTemplateCreateInput $input, ?string $idempotencyKey): CheckoutTemplate
+    public function create(CheckoutTemplateCreateInput $input): CheckoutTemplate
     {
-        return $this->api->createCheckoutTemplate($this->client->getMerchantId(), $input, $idempotencyKey);
+        return $this->api->createCheckoutTemplate($this->client->getMerchantId(), $input);
     }
 
     /**