diff --git a/package.json b/package.json
index 8443273..05ea3bd 100644
--- a/package.json
+++ b/package.json
@@ -5,8 +5,8 @@
   "type": "module",
   "main": "main.js",
   "scripts": {
-    "dev": "rollup --config rollup.config.js -w",
-    "build": "rollup --config rollup.config.js"
+    "dev": "rollup --config rollup.config.mjs -w",
+    "build": "rollup --config rollup.config.mjs"
   },
   "keywords": [],
   "author": "",
diff --git a/rollup.config.js b/rollup.config.mjs
similarity index 100%
rename from rollup.config.js
rename to rollup.config.mjs