diff --git a/src/SmsApi.php b/src/SmsApi.php
index dcf3140..a4c4d49 100644
--- a/src/SmsApi.php
+++ b/src/SmsApi.php
@@ -161,7 +161,8 @@ public function sendMessage($to, $message, $extra_params=null) {
             $mobile = $this->composeBulkMobile($mobile);
         }
         try {
-            $this->response = $this->getClient()->get($this->getUrl($mobile,$message,$extra_params))->getBody()->getContents();
+            $promise = $this->getClient()->getAsync($this->getUrl($mobile,$message,$extra_params));
+            $this->response = $promise->wait()->getBody()->getContents();
         } catch (RequestException $e) {
             if ($e->hasResponse()) {
                 $this->response = $e->getResponseBodySummary($e->getResponse());
@@ -179,4 +180,4 @@ public function sendMessage($to, $message, $extra_params=null) {
     public function response(){
         return $this->response;
     }
-}
\ No newline at end of file
+}