diff --git a/.travis.yml b/.travis.yml
index 2a1c39e..7bc676d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,5 @@ language: node_js
 node_js:
   - 5
   - 4
-  - "0.10"
 before_script:
   - npm install -g grunt-cli
diff --git a/README.md b/README.md
index 07aba67..8d8b102 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # arraydiff
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/derbyjs/arraydiff.svg)](https://greenkeeper.io/)
+
 Diff two arrays, finding inserts, removes, and moves.
 
 [![Build Status](https://travis-ci.org/derbyjs/arraydiff.svg?branch=master)](https://travis-ci.org/derbyjs/arraydiff)
diff --git a/package.json b/package.json
index 24e826a..b40a018 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   "devDependencies": {
     "expect.js": "^0.3.1",
     "jshint": "^2.8.0",
-    "mocha": "^2.3.4"
+    "mocha": "^4.0.1"
   },
   "optionalDependencies": {},
   "bugs": {