diff --git a/package.json b/package.json
index 567b61e..d978d3d 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "6.4.0",
   "description": "Fastify compression utils",
   "main": "index.js",
+  "type": "commonjs",
   "types": "types/index.d.ts",
   "dependencies": {
     "@fastify/accept-negotiator": "^1.1.0",