diff --git a/package.json b/package.json
index 4696565..70c32e3 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,9 @@
   "engines": {
     "node": ">=8.3.0"
   },
-  "files": "index.js",
+  "files": [
+    "index.js"
+  ],
   "homepage": "https://github.com/niftylettuce/express-redirect-loop",
   "husky": {
     "hooks": {