diff --git a/README.md b/README.md
index cb9f46f..eef1363 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 pubsub
 ======
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/danburzo/pubsub.svg)](https://greenkeeper.io/)
+
 `pubsub` is a small, fast\* JavaScript library that implements the [Publish/Subscribe](http://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern) pattern for web applications. Details here: http://danburzo.github.io/pubsub
 
 It's forked from [AppSeeds](http://github.com/danburzo/appseeds).
diff --git a/package.json b/package.json
index 01a258e..480ab32 100644
--- a/package.json
+++ b/package.json
@@ -2,11 +2,11 @@
   "name": "pubsub",
   "version": "0.1.1",
   "devDependencies": {
-    "grunt": "^0.4.5",
-    "grunt-contrib-clean": "~0.5.0",
-    "grunt-contrib-copy": "~0.4.1",
-    "grunt-contrib-qunit": "^1.0.1",
-    "grunt-contrib-uglify": "~0.2.4",
-    "grunt-docco": "^0.4.0"
+    "grunt": "^1.0.2",
+    "grunt-contrib-clean": "~1.1.0",
+    "grunt-contrib-copy": "~1.0.0",
+    "grunt-contrib-qunit": "^2.0.0",
+    "grunt-contrib-uglify": "~3.3.0",
+    "grunt-docco": "^0.5.0"
   }
 }