diff --git a/README.md b/README.md
index 941e1fd18..f1df0966b 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ Generate diagrams from markdown-like text.
 [![NPM](https://img.shields.io/npm/v/mermaid)](https://www.npmjs.com/package/mermaid)
 [![Build CI Status](https://github.com/mermaid-js/mermaid/actions/workflows/build.yml/badge.svg)](https://github.com/mermaid-js/mermaid/actions/workflows/build.yml)
 [![npm minified gzipped bundle size](https://img.shields.io/bundlephobia/minzip/mermaid)](https://bundlephobia.com/package/mermaid)
-[![Coverage Status](https://coveralls.io/repos/github/mermaid-js/mermaid/badge.svg?branch=master)](https://coveralls.io/github/mermaid-js/mermaid?branch=master)
+[![Coverage Status](https://codecov.io/github/mermaid-js/mermaid/branch/develop/graph/badge.svg)](https://app.codecov.io/github/mermaid-js/mermaid/tree/develop)
 [![CDN Status](https://img.shields.io/jsdelivr/npm/hm/mermaid)](https://www.jsdelivr.com/package/npm/mermaid)
 [![NPM Downloads](https://img.shields.io/npm/dm/mermaid)](https://www.npmjs.com/package/mermaid)
 [![Join our Slack!](https://img.shields.io/static/v1?message=join%20chat&color=9cf&logo=slack&label=slack)](https://join.slack.com/t/mermaid-talk/shared_invite/enQtNzc4NDIyNzk4OTAyLWVhYjQxOTI2OTg4YmE1ZmJkY2Y4MTU3ODliYmIwOTY3NDJlYjA0YjIyZTdkMDMyZTUwOGI0NjEzYmEwODcwOTE)
@@ -410,7 +410,7 @@ _Unfortunately you can not have a cake and eat it at the same time which in this
 
 ## Reporting vulnerabilities
 
-To report a vulnerability, please e-mail security@mermaid.live with a description of the issue, the steps you took to create the issue, affected versions, and if known, mitigations for the issue.
+To report a vulnerability, please e-mail <security@mermaid.live> with a description of the issue, the steps you took to create the issue, affected versions, and if known, mitigations for the issue.
 
 ## Appreciation
 
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 2653ac72b..9af34998d 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -27,7 +27,7 @@ Mermaid
 [![NPM](https://img.shields.io/npm/v/mermaid)](https://www.npmjs.com/package/mermaid)
 [![Build CI Status](https://github.com/mermaid-js/mermaid/actions/workflows/build.yml/badge.svg)](https://github.com/mermaid-js/mermaid/actions/workflows/build.yml)
 [![npm minified gzipped bundle size](https://img.shields.io/bundlephobia/minzip/mermaid)](https://bundlephobia.com/package/mermaid)
-[![Coverage Status](https://coveralls.io/repos/github/mermaid-js/mermaid/badge.svg?branch=master)](https://coveralls.io/github/mermaid-js/mermaid?branch=master)
+[![Coverage Status](https://codecov.io/github/mermaid-js/mermaid/branch/develop/graph/badge.svg)](https://app.codecov.io/github/mermaid-js/mermaid/tree/develop)
 [![CDN Status](https://img.shields.io/jsdelivr/npm/hm/mermaid)](https://www.jsdelivr.com/package/npm/mermaid)
 [![NPM Downloads](https://img.shields.io/npm/dm/mermaid)](https://www.npmjs.com/package/mermaid)
 [![Join our Slack!](https://img.shields.io/static/v1?message=join%20chat&color=9cf&logo=slack&label=slack)](https://join.slack.com/t/mermaid-talk/shared_invite/enQtNzc4NDIyNzk4OTAyLWVhYjQxOTI2OTg4YmE1ZmJkY2Y4MTU3ODliYmIwOTY3NDJlYjA0YjIyZTdkMDMyZTUwOGI0NjEzYmEwODcwOTE)