diff --git a/README.md b/README.md
index 1eb9fd8..46aa163 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@ goldmark
 
 [![http://godoc.org/github.com/yuin/goldmark](https://godoc.org/github.com/yuin/goldmark?status.svg)](http://godoc.org/github.com/yuin/goldmark)
 [![https://travis-ci.org/yuin/goldmark](https://travis-ci.org/yuin/goldmark.svg)](https://travis-ci.org/yuin/goldmark)
+[![https://coveralls.io/r/yuin/goldmark](https://coveralls.io/repos/yuin/goldmark/badge.svg)](https://coveralls.io/r/yuin/goldmark)
 
 > A markdown parser written in Go. Easy to extend, standard compliant, well structured.