diff --git a/package.json b/package.json
index f45cd06..9a8479e 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "extract-scss-variables",
   "version": "0.2.1",
   "engines": {
-    "node": "^4 || ^6 || ^7"
+    "node": ">=4"
   },
   "description": "Extract variables from SCSS files",
   "keywords": [