diff --git a/src/Message/InitPaymentRequest.php b/src/Message/InitPaymentRequest.php
index 6638abc..d0bd475 100644
--- a/src/Message/InitPaymentRequest.php
+++ b/src/Message/InitPaymentRequest.php
@@ -136,7 +136,7 @@ public function sendData($data)
     {
         $httpRequest = $this->httpClient->createRequest(
             RequestInterface::POST,
-            'https://iapi.iplatebnibrana.csob.cz/api/v1/payment/init',
+            'https://iapi.iplatebnibrana.csob.cz/api/v1.5/payment/init',
             ['Content-Type' => 'application/json'],
             json_encode($data)
         );
diff --git a/src/Message/ProcessPaymentRequest.php b/src/Message/ProcessPaymentRequest.php
index ac4acbc..431eb63 100644
--- a/src/Message/ProcessPaymentRequest.php
+++ b/src/Message/ProcessPaymentRequest.php
@@ -57,7 +57,7 @@ public function sendData($data)
 
     private function createUri()
     {
-        $uri = 'https://iapi.iplatebnibrana.csob.cz/api/v1/payment/process';
+        $uri = 'https://iapi.iplatebnibrana.csob.cz/api/v1.5/payment/process';
 
         $signator = $this->getSignator();
         $signature = $signator->sign($this->getParameters(), ['merchantId', 'payId', 'dttm']);