diff --git a/controllers/example.php b/controllers/example.php
index ec806aa..be1fd35 100644
--- a/controllers/example.php
+++ b/controllers/example.php
@@ -142,7 +142,8 @@ public function index()
         $code_length = '4'; //optional 4 or 6
         $lg = 'en-us'; //optional nexmo default en-us https://docs.nexmo.com/index.php/voice-api/text-to-speech#languages
         $require_type = null; //optional enabled on request by nexmo
-        $response = $this->nexmo->verify_request($to, $brand, $sender_id, $code_length, $lg, $require_type);
+        $pin_expiry = 300;
+        $response = $this->nexmo->verify_request($to, $brand, $sender_id, $code_length, $lg, $require_type, $pin_expiry);
         echo "<h1>Verify - Request</h1>";
         $this->nexmo->d_print($response);
         echo "<h3>Response Code: " . $this->nexmo->get_http_status() . "</h3>";
diff --git a/libraries/nexmo.php b/libraries/nexmo.php
index b99e17d..99122d5 100644
--- a/libraries/nexmo.php
+++ b/libraries/nexmo.php
@@ -429,9 +429,11 @@ public function search_rejections($date = null, $to = null)
      * @param string
      * @param string
      * @param string
+     * @param string
+     * @param int
      * return json or xml
      */
-    public function verify_request($to, $brand, $sender_id = null, $code_length = null, $lg = null, $require_type = null)
+    public function verify_request($to, $brand, $sender_id = null, $code_length = null, $lg = null, $require_type = null, $pin_expiry = 300)
     {
         $options = [
             CURLOPT_HTTPHEADER => ["Accept: application/" . $this->_format],
@@ -444,6 +446,7 @@ public function verify_request($to, $brand, $sender_id = null, $code_length = nu
             'code_length'  => $code_length,
             'lg'           => $lg,
             'require_type' => $require_type,
+            'pin_expiry'   => $pin_expiry,
         ];
 
         return $this->request('get', $this->verify_url($params), null, $options);