diff --git a/.travis.yml b/.travis.yml
index d431fa4..504c75d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,7 @@
 sudo: false
 language: node_js
 node_js:
-  - "0.10"
-  - "0.12"
   - "4"
   - "6"
+  - "8"
 
diff --git a/package.json b/package.json
index 15c2c8e..7392a84 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,9 @@
     "posttest": "npm run lint",
     "lint": "eslint ."
   },
+  "engines": {
+    "node": ">=4"
+  },
   "license": "MIT",
   "dependencies": {
     "async": "~0.9.0",