diff --git a/README.md b/README.md
index 9f1f43b..cf3521e 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # TINU - These Incredibly Naughty Units
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/wanadev/tinu.svg)](https://greenkeeper.io/)
+
 [![NPM version](https://badge.fury.io/js/tinu.png)](http://badge.fury.io/js/tinu)
 [![Build Status](https://travis-ci.org/wanadev/tinu.svg?branch=master)](https://travis-ci.org/wanadev/tinu)
 
diff --git a/package.json b/package.json
index d921849..f9ba14b 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "grunt": "^1.0.1",
     "grunt-browserify": "^5.0.0",
     "grunt-contrib-clean": "^1.0.0",
-    "grunt-contrib-uglify": "^2.0.0",
+    "grunt-contrib-uglify": "^3.0.0",
     "grunt-contrib-watch": "^1.0.0",
     "mocha": "^3.2.0"
   }