diff --git a/README.md b/README.md
index 911a84d..92cd453 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ export default withSecureHeaders({
 <div align="center">
 <a href="https://www.npmjs.com/package/next-secure-headers"><img src="https://img.shields.io/npm/v/next-secure-headers.svg" alt="npm"></a>
 <a href="https://circleci.com/gh/jagaapple/next-secure-headers"><img src="https://img.shields.io/circleci/project/github/jagaapple/next-secure-headers/master.svg" alt="CircleCI"></a>
+<a href="https://codecov.io/gh/jagaapple/next-secure-headers"><img src="https://img.shields.io/codecov/c/github/jagaapple/next-secure-headers.svg"></a>
 <a href="https://opensource.org/licenses/MIT"><img src="https://img.shields.io/github/license/jagaapple/next-secure-headers.svg" alt="license"></a>
 <a href="https://twitter.com/jagaapple_tech"><img src="https://img.shields.io/badge/contact-%40jagaapple_tech-blue.svg" alt="@jagaapple_tech"></a>
 </div>