diff --git a/README.md b/README.md
index e6823ef..892f307 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 [<img src="https://img.shields.io/github/license/esrrhs/pingtunnel">](https://github.com/esrrhs/pingtunnel)
 [<img src="https://img.shields.io/github/languages/top/esrrhs/pingtunnel">](https://github.com/esrrhs/pingtunnel)
+[![Go Report Card](https://goreportcard.com/badge/github.com/esrrhs/pingtunnel)](https://goreportcard.com/report/github.com/esrrhs/pingtunnel)
 [<img src="https://img.shields.io/github/v/release/esrrhs/pingtunnel">](https://github.com/esrrhs/pingtunnel/releases)
 [<img src="https://img.shields.io/github/downloads/esrrhs/pingtunnel/total">](https://github.com/esrrhs/pingtunnel/releases)
 [<img src="https://img.shields.io/docker/pulls/esrrhs/pingtunnel">](https://hub.docker.com/repository/docker/esrrhs/pingtunnel)