diff --git a/README.md b/README.md
index a94d914..3c75105 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ at http://documentation.mailgun.com
 
 [![Latest Stable Version](https://poser.pugx.org/mailgun/mailgun-php/v/stable.png)](https://packagist.org/packages/mailgun/mailgun-php)
 [![Build Status](https://travis-ci.org/mailgun/mailgun-php.png)](https://travis-ci.org/mailgun/mailgun-php)
+[![StyleCI](https://styleci.io/repos/11654443/shield?branch=master)](https://styleci.io/repos/11654443)
 
 ## Installation