diff --git a/README.md b/README.md
index 07d96e2..71c62de 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 FFTW for node.js
 ================
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/apechimp/node-fftw.svg)](https://greenkeeper.io/)
+
 Linux Build | Windows Build
 ------------|--------------|
 [![Build Status](https://travis-ci.org/apechimp/node-fftw.svg?branch=master)](https://travis-ci.org/apechimp/node-fftw) |[![Build status](https://ci.appveyor.com/api/projects/status/8u6ghatt9gkvj5go/branch/master?svg=true)](https://ci.appveyor.com/project/apechimp/node-fftw/branch/master)
diff --git a/package.json b/package.json
index e1d13e0..cc1883f 100644
--- a/package.json
+++ b/package.json
@@ -14,10 +14,10 @@
   "license": "MIT",
   "dependencies": {
     "bindings": "^1.2.1",
-    "nan": "^1.2.0"
+    "nan": "^2.6.2"
   },
   "gypfile": true,
   "devDependencies": {
-    "tape": "^3.0.0"
+    "tape": "^4.6.3"
   }
 }