sudo: false
language: node_js
node_js:
  - "0.10"
  - "0.12"
  - "4.0.0"
after_script:
  - npm run coveralls
git:
  depth: 10

sudo: false
language: node_js
node_js:
  - "0.10"
  - "0.12"
  - "stable"
after_script:
  - npm run coveralls
git:
  depth: 10

Change node 4.0.0 to stable version.
Change node 4.0.0 to stable version.