diff --git a/README.md b/README.md
index 8b985bd..cc08798 100644
--- a/README.md
+++ b/README.md
@@ -339,6 +339,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 * [PHPCheckstyle](https://github.com/jbrooksuk/phpcheckstyle) - A tool to help adhere to certain coding conventions.
 * [PhpDependencyAnalysis](https://github.com/mamuz/PhpDependencyAnalysis) - A tool to create customisable dependency graphs.
 * [Code Climate](http://codeclimate.com) - An automated code review.
+* [Hippo](https://github.com/hippophp/hippo) - A PHP standards checker.
 
 ## Architectural
 *Libraries related to design patterns, programming approaches and ways to organize code.*