diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index a34be0a..49ed307 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,7 +4,7 @@
 
 * 在 GitHub 上点击 `fork` 将本仓库 fork 到自己的仓库，如 `yourname/nginx-docs`，然后 `clone` 到本地。
 
-```sh
+```bash
 $ git clone git@github.com:yourname/nginx-docs.git
 $ cd nginx-docs
 # 将项目与上游关联
@@ -13,7 +13,7 @@ $ git remote add source git@github.com:DocsHome/nginx-docs.git
 
 * 增加内容或者修复错误后提交，并推送到自己的仓库。
 
-```sh
+```bash
 $ git add .
 $ git commit -a "Fix issue #1: change helo to hello"
 $ git push origin/master
@@ -23,7 +23,7 @@ $ git push origin/master
 
 * 请定期更新自己仓库内容。
 
-```sh
+```bash
 $ git fetch source
 $ git rebase source/master
 $ git push -f origin master
diff --git a/README.md b/README.md
index e5b2f64..bbd5d98 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Nginx 中文文档
 
-[![GitHub stars](https://img.shields.io/github/stars/DocsHome/nginx-docs.svg?style=social&label=Stars)](https://github.com/DocsHome/nginx-docs) [![GitHub contributors](https://img.shields.io/github/contributors/DocsHome/nginx-docs.svg)](https://github.com/DocsHome/nginx-docs) [![GitHub pull requests](https://img.shields.io/github/issues-pr/DocsHome/nginx-docs.svg)](https://github.com/DocsHome/nginx-docs) [![GitHub last commit](https://img.shields.io/github/last-commit/DocsHome/nginx-docs.svg)](https://github.com/DocsHome/nginx-docs)
+[![GitHub stars](https://img.shields.io/github/stars/DocsHome/nginx-docs.svg?style=social&label=Stars)](https://github.com/DocsHome/nginx-docs) [![GitHub pull requests](https://img.shields.io/github/issues-pr/DocsHome/nginx-docs.svg)](https://github.com/DocsHome/nginx-docs) [![GitHub last commit](https://img.shields.io/github/last-commit/DocsHome/nginx-docs.svg)](https://github.com/DocsHome/nginx-docs)
 
 ![Nginx logo](https://nginx.org/nginx.png)