diff --git a/src/PublisherAPI/Curl.php b/src/PublisherAPI/Curl.php
index 70d9b3a..9e103f6 100644
--- a/src/PublisherAPI/Curl.php
+++ b/src/PublisherAPI/Curl.php
@@ -238,6 +238,10 @@ public function post($path, Array $path_args, Array $data = []) {
         'Authorization'   => $this->auth($string)
       ]
     );
+
+    // Set to use TLS 1.2
+    $this->client->setOpt(CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2);
+
     // Send POST request.
     return $this->request($contents);
   }