diff --git a/dev/package.json b/dev/package.json
index 847cef2..cf0a31e 100644
--- a/dev/package.json
+++ b/dev/package.json
@@ -79,7 +79,7 @@
   },
   "devDependencies": {},
   "engines": {
-    "node": "^4.2.6",
+    "node": "^4.4.6 || ^6.2.1",
     "npm": "^3.5.3"
   }
 }
diff --git a/package.json b/package.json
index dd406b0..656fc25 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "eslint-plugin-react": "^3.16.1"
   },
   "engines": {
-    "node": "^4.2.6",
+    "node": "^4.4.6 || ^6.2.1",
     "npm": "^3.5.3"
   }
 }