diff --git a/.travis.yml b/.travis.yml
index 354e179..cb12551 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,9 @@
+sudo: false
 language: node_js
 node_js:
-  - 'iojs-2'
+  - '0.12'
+  - '4'
+  - '6'
+  - '7'
 script: "npm run test-travis"
 after_script: "npm install coveralls@2 && cat ./coverage/lcov.info | coveralls"
diff --git a/lib/client.js b/lib/client.js
index 60058c4..69c3818 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -1,19 +1,5 @@
-/**!
- * restful-client - lib/client.js
- *
- * Copyright(c) node-modules and other contributors.
- * MIT Licensed
- *
- * Authors:
- *   fengmk2 <fengmk2@gmail.com> (http://fengmk2.com)
- */
-
 'use strict';
 
-/**
- * Module dependencies.
- */
-
 var debug = require('debug')('restful-client:client');
 var urllib = require('urllib');
 var RESTFulResource = require('./resource');
diff --git a/lib/resource.js b/lib/resource.js
index 962f624..64d3797 100644
--- a/lib/resource.js
+++ b/lib/resource.js
@@ -1,19 +1,5 @@
-/**!
- * restful-client - lib/resource.js
- *
- * Copyright(c) fengmk2 and other contributors.
- * MIT Licensed
- *
- * Authors:
- *   fengmk2 <m@fengmk2.com> (http://fengmk2.com)
- */
-
 'use strict';
 
-/**
- * Module dependencies.
- */
-
 module.exports = RESTFulResource;
 
 /**
diff --git a/package.json b/package.json
index 908f667..54daa9f 100644
--- a/package.json
+++ b/package.json
@@ -12,19 +12,18 @@
     "test-cov": "node --harmony node_modules/.bin/istanbul cover node_modules/.bin/_mocha -- -t 20000 -r should-http test/*.test.js",
     "test-travis": "node --harmony node_modules/.bin/istanbul cover node_modules/.bin/_mocha --report lcovonly -- -t 20000 -r should-http test/*.test.js",
     "jshint": "jshint .",
-    "autod": "autod -w --prefix '~' && npm run cnpm",
-    "cnpm": "npm install --registry=https://registry.npm.taobao.org"
+    "autod": "autod -w --prefix '^'"
   },
   "dependencies": {
-    "debug": "~2.2.0",
-    "urllib": "~2.3.8"
+    "debug": "^2.6.7",
+    "urllib": "^2.22.0"
   },
   "devDependencies": {
     "autod": "*",
-    "istanbul-harmony": "*",
-    "mm": "*",
+    "istanbul": "*",
+    "mm": "^2.1.0",
     "mocha": "*",
-    "should": "6",
+    "should": "^11.2.1",
     "should-http": "*"
   },
   "homepage": "https://github.com/node-modules/restful-client",
@@ -36,7 +35,7 @@
     "restful-client", "restful"
   ],
   "engines": {
-    "node": ">= 0.10.0"
+    "node": ">= 0.12.0"
   },
   "author": "fengmk2 <fengmk2@gmail.com>",
   "license": "MIT"
diff --git a/test/client.test.js b/test/client.test.js
index 46950d1..71bba75 100644
--- a/test/client.test.js
+++ b/test/client.test.js
@@ -1,19 +1,5 @@
-/**!
- * restful-client - test/client.test.js
- *
- * Copyright(c) node-modules and other contributors.
- * MIT Licensed
- *
- * Authors:
- *   fengmk2 <m@fengmk2.com> (http://fengmk2.com)
- */
-
 'use strict';
 
-/**
- * Module dependencies.
- */
-
 var should = require('should');
 var mm = require('mm');
 var Gitlab = require('./gitlab_client');
diff --git a/test/gitlab_client.js b/test/gitlab_client.js
index ab2159a..d3acb56 100644
--- a/test/gitlab_client.js
+++ b/test/gitlab_client.js
@@ -1,19 +1,5 @@
-/**!
- * restful-client - test/gitlab_client.js
- *
- * Copyright(c) node-modules and other contributors.
- * MIT Licensed
- *
- * Authors:
- *   fengmk2 <fengmk2@gmail.com> (http://fengmk2.github.com)
- */
-
 'use strict';
 
-/**
- * Module dependencies.
- */
-
 var util = require('util');
 var restful = require('../');