diff --git a/.travis.yml b/.travis.yml
index 2083806..d669492 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
 language: node_js
 node_js:
-  - "0.11"
-  - "0.10"
\ No newline at end of file
+  - 4
+  - 6
diff --git a/package.json b/package.json
index 50026f2..5e73cf5 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
   },
   "main": "index.js",
   "engines": {
-    "node": "*"
+    "node": ">= 4"
   },
   "version": "0.1.2",
   "dependencies": {