diff --git a/package.json b/package.json
index b763dd6..d35cb82 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "3.0.1",
   "description": "Security rules for eslint",
   "main": "index.js",
+  "type": "commonjs",
   "scripts": {
     "changelog": "changelog eslint-plugin-security all > CHANGELOG.md",
     "cont-int": "npm test && npm run lint",