diff --git a/README.md b/README.md
index 6d6c621..f788953 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@ CL-CUSTOM-HASH-TABLE: Custom hash tables for Common Lisp
 ========================================================
 
 [![Build Status](https://travis-ci.org/metawilm/cl-custom-hash-table.svg?branch=master)](https://travis-ci.org/metawilm/cl-custom-hash-table)
+[![Coverage Status](https://coveralls.io/repos/metawilm/cl-custom-hash-table/badge.svg?branch=coverage)](https://coveralls.io/r/metawilm/cl-custom-hash-table?branch=coverage)
 
 Introduction
 ------------