diff --git a/package.json b/package.json
index 558ce76..f3618cd 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "2.0.0",
   "description": "Use the Hotwire pattern with Fastify",
   "main": "index.js",
+  "type": "commonjs",
   "types": "types/index.d.ts",
   "scripts": {
     "demo": "node example/app.js",