diff --git a/src/Chatwork.php b/src/Chatwork.php
index 30410765..5468d048 100644
--- a/src/Chatwork.php
+++ b/src/Chatwork.php
@@ -70,7 +70,7 @@ public function sendMessage($params)
         $ch = null;
         try {
             $ch = curl_init();
-            curl_setopt($ch, CURLOPT_URL, 'https://api.chatwork.com/v1/rooms/'.$roomId.'/messages');
+            curl_setopt($ch, CURLOPT_URL, 'https://api.chatwork.com/v2/rooms/'.$roomId.'/messages');
             curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-ChatWorkToken: '.$this->token]);
             curl_setopt($ch, CURLOPT_POST, 1);
             curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($option, '', '&'));