diff --git a/.travis.yml b/.travis.yml
index c19c14f9..34ce1802 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,10 +4,6 @@ node_js:
   - 8
   - 10
 
-before_install:
-  - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.6.0
-  - export PATH="$HOME/.yarn/bin:$PATH"
-
 script:
   - yarn run build
   - yarn run lint
diff --git a/CONTRIBUTING-zh_CN.md b/CONTRIBUTING-zh_CN.md
index 9841c993..4c3c8a7f 100644
--- a/CONTRIBUTING-zh_CN.md
+++ b/CONTRIBUTING-zh_CN.md
@@ -53,7 +53,8 @@
 6.  确保能通过 lint 校验。
 
     ```sh
-    npm run lint:fix
+    npm run format
+    npm run lint
     ```
 
 7.  请确保能通过所有测试用例。
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 04299a66..4828116a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -53,7 +53,8 @@ _Before_ submitting a pull request, please make sure the following is done…
 6)  Ensure the linting is good via `yarn run lint:fix`.
 
     ```sh
-    npm run lint:fix
+    npm run format
+    npm run lint
     ```
 
 7)  Ensure the testing is good via `yarn run test`.
diff --git a/package.json b/package.json
index 4e2199f3..b9143a8a 100644
--- a/package.json
+++ b/package.json
@@ -30,8 +30,8 @@
     "zhihu-video-player"
   ],
   "scripts": {
-    "format": "prettier --write \"packages/**/*.{js,json,md}\" \"*.{js,json,md}\"",
-    "lint": "eslint --fix \"packages/**/*.js\" \"*.js\"",
+    "format": "prettier \"packages/**/*.{js,json,md}\" \"*.{js,json,md}\"",
+    "lint": "eslint \"packages/**/*.js\" \"*.js\"",
     "test": "jest",
     "test:coverage": "jest --coverage",
     "test:watch": "jest --watch --notify",