diff --git a/.travis.yml b/.travis.yml
index 4914a24..7e15e62 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,5 @@
 language: node_js
 node_js: 
-  - "5"
   - "6"
   - "7"
   - "8"
diff --git a/README.md b/README.md
index 7512890..cd76e27 100644
--- a/README.md
+++ b/README.md
@@ -3,15 +3,21 @@
 [![Build Status](https://secure.travis-ci.org/edsu/anon.svg)](http://travis-ci.org/edsu/anon)
 [![Gitter chat](https://badges.gitter.im/edsu/anon.svg)](https://gitter.im/edsu/anon)
 
-anon will watch Wikipedia for edits from a set of named IP ranges and will tweet when it notices one. It was inspired by [@parliamentedits](https://twitter.com/parliamentedits) and is used to make [@congressedits](https://twitter.com/congressedits) available. It is now being used a [community](#community) of users to post selected Wikipedia edits to Twitter.
+anon will watch Wikipedia for edits from a set of named IP ranges and will tweet
+when it notices one. It was inspired by
+[@parliamentedits](https://twitter.com/parliamentedits) and is used to make
+[@congressedits](https://twitter.com/congressedits) available. It is now being
+used a [community](#community) of users to post selected Wikipedia edits to
+Twitter.
 
-anon can also send updates on [GNU Social / Mastodon](https://github.com/tootsuite/mastodon) (see below)
+anon can also send updates on [GNU Social /
+Mastodon](https://github.com/tootsuite/mastodon) (see below)
 
 ## Run
 
 To run anon you will need to:
 
-1. install [Node](http://nodejs.org)
+1. install [Node](http://nodejs.org) (v6 or higher)
 1. `git clone https://github.com/edsu/anon.git`
 1. `cd anon`
 1. `npm install`
diff --git a/package.json b/package.json
index 85d8399..fb6fa2e 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "description": "Tweet anonymous edits to Wikipedia from IP ranges.",
   "homepage": "http://github.com/edsu/anon",
   "license": "CC0-1.0",
-  "version": "0.0.3",
+  "version": "0.0.7",
   "dependencies": {
     "async": "0.9.x",
     "ipv6": "3.x.x",
@@ -17,6 +17,11 @@
     "mocha": "latest",
     "chai": "latest"
   },
+  {
+    "engines": {
+      "node": ">=6
+    }
+  },
   "scripts": {
     "test": "mocha --colors --reporter spec test.js",
     "start": "node anon.js",