diff --git a/.travis.yml b/.travis.yml
index ec6072c9..bdf39070 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,10 +1,10 @@
 sudo: false
 language: node_js
 node_js:
-  - "0.10"
-  - "0.12"
   - "4"
   - "6"
+  - "8"
+
 after_success: npm run coverage
 
 # see https://www.npmjs.com/package/phantomjs-prebuilt#continuous-integration
diff --git a/package.json b/package.json
index 9f1fff65..b7e93418 100644
--- a/package.json
+++ b/package.json
@@ -35,6 +35,9 @@
     "coverage": "nyc report --reporter=text-lcov | coveralls",
     "test": "nyc grunt mocha-and-karma"
   },
+  "engines": {
+    "node": ">=4.0.0"
+  },
   "dependencies": {
     "async": "^2.0.1",
     "bcryptjs": "^2.1.0",