diff --git a/README.md b/README.md
index fdd0593..fa5f3be 100644
--- a/README.md
+++ b/README.md
@@ -506,3 +506,4 @@ Badges
 
 [![Build Status](https://travis-ci.org/guide42/plan.svg)](https://travis-ci.org/guide42/plan)
 [![Total Downloads](https://poser.pugx.org/guide42/plan/downloads.svg)](https://packagist.org/packages/guide42/plan)
+[![Coverage Status](https://coveralls.io/repos/github/guide42/plan/badge.svg)](https://coveralls.io/github/guide42/plan)