diff --git a/README.md b/README.md
index ec737d23..bd349792 100755
--- a/README.md
+++ b/README.md
@@ -1,7 +1,6 @@
 ![](https://github.com/an-tao/drogon/wiki/images/drogon-white.jpg)
 
 [![Build Status](https://travis-ci.com/an-tao/drogon.svg?branch=master)](https://travis-ci.com/an-tao/drogon)
-[![Codacy Badge](https://api.codacy.com/project/badge/Grade/45f8a65ca1844788b9109c0044a618f8)](https://app.codacy.com/app/an-tao/drogon?utm_source=github.com&utm_medium=referral&utm_content=an-tao/drogon&utm_campaign=Badge_Grade_Dashboard)
 [![Total alerts](https://img.shields.io/lgtm/alerts/g/an-tao/drogon.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/an-tao/drogon/alerts/)
 [![Language grade: C/C++](https://img.shields.io/lgtm/grade/cpp/g/an-tao/drogon.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/an-tao/drogon/context:cpp) 
 [![Join the chat at https://gitter.im/drogon-web/community](https://badges.gitter.im/drogon-web/community.svg)](https://gitter.im/drogon-web/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 889987ef..15b82fe2 100755
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -1,7 +1,6 @@
 ![](https://github.com/an-tao/drogon/wiki/images/drogon-white.jpg)
 
 [![Build Status](https://travis-ci.com/an-tao/drogon.svg?branch=master)](https://travis-ci.com/an-tao/drogon)
-[![Codacy Badge](https://api.codacy.com/project/badge/Grade/45f8a65ca1844788b9109c0044a618f8)](https://app.codacy.com/app/an-tao/drogon?utm_source=github.com&utm_medium=referral&utm_content=an-tao/drogon&utm_campaign=Badge_Grade_Dashboard)
 [![Total alerts](https://img.shields.io/lgtm/alerts/g/an-tao/drogon.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/an-tao/drogon/alerts/)
 [![Language grade: C/C++](https://img.shields.io/lgtm/grade/cpp/g/an-tao/drogon.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/an-tao/drogon/context:cpp) 
 [![Join the chat at https://gitter.im/drogon-web/community](https://badges.gitter.im/drogon-web/community.svg)](https://gitter.im/drogon-web/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
diff --git a/trantor b/trantor
index 910a4f99..97c8507b 160000
--- a/trantor
+++ b/trantor
@@ -1 +1 @@
-Subproject commit 910a4f99a5c7424e6656873bf3e0aee19f47f42d
+Subproject commit 97c8507b38a4fac8c1c03918cadbafcd2f0d0611