diff --git a/.travis.yml b/.travis.yml
index 69bd99e..bae5207 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ cache:
 branches:
   only:
     - master
+    - /^greenkeeper/.*$/
 install:
   - npm install -g npm@latest
   - npm install -g yarn bower
diff --git a/README.md b/README.md
index 0f35b2b..fbecd2c 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ Multiplayer online game using Phaser + WebSocket (Socket.IO).
 
 [![Blocker - Game play 1](https://raw.githubusercontent.com/jojoee/blocker/master/screenshot/play1.jpg "Blocker - Game play 1")](http://blocker.jojoee.com/)
 
-[![Blocker - Debug](https://raw.githubusercontent.com/jojoee/blocker/master/screenshot/debug.jpg "Blocker - Debug")](http://blocker.jojoee.com/)
+[![Blocker - Debug](https://raw.githubusercontent.com/jojoee/blocker/master/screenshot/debug.jpg "Blocker - Debug")](http://blocker.jojoee.com/) [![Greenkeeper badge](https://badges.greenkeeper.io/jojoee/blocker.svg)](https://greenkeeper.io/)
 
 ## Getting Started
 1. Install [Node.js](https://nodejs.org/en/)
diff --git a/package.json b/package.json
index 2914921..9cdcaa9 100644
--- a/package.json
+++ b/package.json
@@ -53,22 +53,22 @@
     "babel-core": "^6.26.0",
     "babel-preset-es2015": "^6.24.1",
     "browser-sync": "^2.18.13",
-    "browserify": "^14.5.0",
-    "gulp": "^3.9.1",
-    "gulp-autoprefixer": "^4.0.0",
-    "gulp-babel": "^7.0.0",
-    "gulp-clean": "^0.3.2",
+    "browserify": "^16.2.3",
+    "gulp": "^4.0.0",
+    "gulp-autoprefixer": "^6.0.0",
+    "gulp-babel": "^8.0.0",
+    "gulp-clean": "^0.4.0",
     "gulp-cssmin": "^0.2.0",
-    "gulp-imagemin": "^4.0.0",
-    "gulp-less": "^3.3.2",
+    "gulp-imagemin": "^5.0.3",
+    "gulp-less": "^4.0.1",
     "gulp-notify": "^3.0.0",
     "gulp-sourcemaps": "^2.6.1",
     "gulp-uglify": "^3.0.0",
     "gulp-util": "^3.0.8",
     "lodash.assign": "^4.2.0",
-    "standard": "^10.0.3",
+    "standard": "^12.0.1",
     "vinyl-buffer": "^1.0.0",
-    "vinyl-source-stream": "^1.1.0",
+    "vinyl-source-stream": "^2.0.0",
     "watchify": "^3.9.0"
   }
 }