diff --git a/package.json b/package.json
index fac4e8c..09f4320 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
 	},
 	"license": "MIT",
 	"engines": {
-		"node": ">=4.0.0"
+		"node": ">=6.0.0"
 	},
 	"dependencies": {
 		"async": "^0.9.2",