diff --git a/README.md b/README.md
index c289575..d88428d 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@
 [<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)
 [<img src="https://img.shields.io/github/workflow/status/esrrhs/pingtunnel/Go">](https://github.com/esrrhs/pingtunnel/actions)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/a200bca59d1b4ca7a9c2cdb564508b47)](https://www.codacy.com/manual/esrrhs/pingtunnel?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=esrrhs/pingtunnel&amp;utm_campaign=Badge_Grade)
 
 pingtunnel是把tcp/udp/sock5流量伪装成icmp流量进行转发的工具。用于突破网络封锁，或是绕过WIFI网络的登陆验证，或是在某些网络加快网络传输速度。