diff --git a/admin/controller/payment/iyzico.php b/admin/controller/payment/iyzico.php
index 6becf55..aad2dc5 100644
--- a/admin/controller/payment/iyzico.php
+++ b/admin/controller/payment/iyzico.php
@@ -2,7 +2,7 @@
 
 class ControllerPaymentIyzico extends Controller {
 
-    private $module_version = "2.0.0";
+    private $module_version = "2.1.0";
     private $module_product_name = "FLAP";
 
     private $error = array();
@@ -310,4 +310,4 @@ private function setPWIModuleFirstStatus($pwiStatus)
             $this->db->query("INSERT INTO `" . DB_PREFIX . "setting` (`code`, `key`, `value`, `serialized`) VALUES ('payment_iyzico_pwi_status', 'payment_iyzico_pwi_first_enabled_status', '1', '0');");
         }
     }
-}
\ No newline at end of file
+}
diff --git a/admin/model/payment/iyzico.php b/admin/model/payment/iyzico.php
index c84ffb2..203318f 100644
--- a/admin/model/payment/iyzico.php
+++ b/admin/model/payment/iyzico.php
@@ -141,7 +141,7 @@ public function curlPost($json,$authorizationData,$url) {
         }
         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
         curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 0);
-        curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
+        curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_NONE);
         curl_setopt($curl, CURLOPT_TIMEOUT, 10);
 
         curl_setopt(
@@ -159,4 +159,4 @@ public function curlPost($json,$authorizationData,$url) {
         return $result;
     }
 
-}
\ No newline at end of file
+}
diff --git a/catalog/controller/extension/payment/iyzico.php b/catalog/controller/extension/payment/iyzico.php
index aa3d947..e0f4aaf 100644
--- a/catalog/controller/extension/payment/iyzico.php
+++ b/catalog/controller/extension/payment/iyzico.php
@@ -3,7 +3,7 @@
 
 //Opencart2.3v and 2.0v are using Payment
 class ControllerExtensionPaymentIyzico extends Controller {
-    private $module_version = "2.0.0";
+    private $module_version = "2.1.0";
     private $module_product_name = "FLAP";
 
     public function index()
@@ -449,7 +449,7 @@ public function injectOverlayScript($route, $args, &$output) {
     		                left: 0;
     		                width: 100%;
                         }
-                    }	
+                    }
 	            </style><script> window.iyz = { token: '" . $token . "', position: '" . $overlay_status . "', ideaSoft: false, pwi:true};</script>
         <script src='https://static.iyzipay.com/buyer-protection/buyer-protection.js' type='text/javascript'></script></footer>";
 
@@ -504,4 +504,4 @@ public function webhookHttpResponse($message,$status){
         exit();
     }
 
-}
\ No newline at end of file
+}
diff --git a/catalog/controller/payment/iyzico.php b/catalog/controller/payment/iyzico.php
index 338d645..fa09c3c 100644
--- a/catalog/controller/payment/iyzico.php
+++ b/catalog/controller/payment/iyzico.php
@@ -3,7 +3,7 @@
 
 //Opencart2.0v Only use for index function
 class ControllerPaymentIyzico extends Controller {
-    private $module_version = "2.0.0";
+    private $module_version = "2.1.0";
     private $module_product_name = "FLAP";
 
     public function index()
@@ -67,4 +67,4 @@ private function setcookieSameSite($name, $value, $expire, $path, $domain, $secu
     }
 
 
-}
\ No newline at end of file
+}
diff --git a/catalog/model/payment/iyzico.php b/catalog/model/payment/iyzico.php
index 035a5bb..5e330cd 100644
--- a/catalog/model/payment/iyzico.php
+++ b/catalog/model/payment/iyzico.php
@@ -181,7 +181,7 @@ public function curlPost($json,$authorization_data,$url) {
         }
         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
         curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 0);
-        curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
+        curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_NONE);
         curl_setopt($curl, CURLOPT_TIMEOUT, 150);
 
         curl_setopt(
@@ -203,7 +203,7 @@ public function curlPost($json,$authorization_data,$url) {
 
     public function insertCardUserKey($customer_id,$card_user_key,$api_key) {
 
-        $insertCard = $this->db->query("INSERT INTO `" . DB_PREFIX . "iyzico_card` SET 
+        $insertCard = $this->db->query("INSERT INTO `" . DB_PREFIX . "iyzico_card` SET
 			`customer_id` 	= '" . $this->db->escape($customer_id) . "',
 			`card_user_key` = '" . $this->db->escape($card_user_key) . "',
 			`api_key` 		= '" . $this->db->escape($api_key) . "'");
@@ -228,9 +228,9 @@ public function findUserCardKey($customer_id,$api_key) {
 
     public function insertIyzicoOrder($order) {
 
-        $insertOrder = $this->db->query("INSERT INTO `" . DB_PREFIX . "iyzico_order` SET 
+        $insertOrder = $this->db->query("INSERT INTO `" . DB_PREFIX . "iyzico_order` SET
 			`payment_id` = '" . $this->db->escape($order->payment_id) . "',
-			`order_id` = '" . $this->db->escape($order->order_id) . "', 
+			`order_id` = '" . $this->db->escape($order->order_id) . "',
 			`total_amount` = '" . $this->db->escape($order->total_amount) . "',
 			`status` = '" . $this->db->escape($order->status) . "'");
 
@@ -324,4 +324,4 @@ public function addCustomerMessageToOrderHistory($order_id, $order_status_id, $c
     {
         $this->db->query("INSERT INTO " . DB_PREFIX . "order_history SET order_id = '" . (int)$order_id . "', order_status_id = '" . (int)$order_status_id . "', notify = '" . (int)$notify . "', comment = '" . $this->db->escape($comment) . "', date_added = NOW()");
     }
-}
\ No newline at end of file
+}