diff --git a/.gitignore b/.gitignore
index ec43995..af1c85e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ test/fixtures/*.json
 node_modules/
 node_modules/*
 npm-debug.log
+coverage
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
index 3b53ece..696701c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ node_js:
   - "0.10"
   - "0.12"
   - "4.1"
+  - "5"
 
 before_install:
   - travis_retry npm install npm -g
@@ -15,6 +16,10 @@ before_install:
 script:
   - npm test
 
+after_script:
+  - npm run cover
+  - npm run coveralls
+
 matrix:
   allow_failures:
     - node_js: "0.10"
diff --git a/README.md b/README.md
index 6a90f19..8a73170 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # nconf
 
-[![Version npm](https://img.shields.io/npm/v/nconf.svg?style=flat-square)](https://www.npmjs.com/package/nconf)[![npm Downloads](https://img.shields.io/npm/dm/nconf.svg?style=flat-square)](https://www.npmjs.com/package/nconf)[![Build Status](https://img.shields.io/travis/indexzero/nconf/master.svg?style=flat-square)](https://travis-ci.org/indexzero/nconf)[![Dependencies](https://img.shields.io/david/indexzero/nconf.svg?style=flat-square)](https://david-dm.org/indexzero/nconf)
+[![Version npm](https://img.shields.io/npm/v/nconf.svg?style=flat-square)](https://www.npmjs.com/package/nconf)[![npm Downloads](https://img.shields.io/npm/dm/nconf.svg?style=flat-square)](https://www.npmjs.com/package/nconf)[![Build Status](https://img.shields.io/travis/indexzero/nconf/master.svg?style=flat-square)](https://travis-ci.org/indexzero/nconf)[![Coverage](https://img.shields.io/coveralls/indexzero/nconf.svg?style=flat-square)](https://coveralls.io/github/indexzero/nconf)[![Dependencies](https://img.shields.io/david/indexzero/nconf.svg?style=flat-square)](https://david-dm.org/indexzero/nconf)
 
 Hierarchical node.js configuration with files, environment variables, command-line arguments, and atomic object merging.
 
diff --git a/package.json b/package.json
index a1c13e1..ee96101 100644
--- a/package.json
+++ b/package.json
@@ -18,11 +18,15 @@
     "yargs": "^3.19.0"
   },
   "devDependencies": {
+    "coveralls": "^2.11.4",
+    "istanbul": "^0.4.1",
     "vows": "0.8.x"
   },
   "main": "./lib/nconf",
   "scripts": {
-    "test": "vows test/*-test.js test/**/*-test.js --spec"
+    "test": "vows test/*-test.js test/**/*-test.js --spec",
+    "cover": "istanbul cover vows -- test/*-test.js test/**/*-test.js  --spec",
+    "coveralls": "cat coverage/lcov.info | coveralls"
   },
   "engines": {
     "node": ">= 0.4.0"