diff --git a/package.json b/package.json
index 3c8b9d1..db0bdc4 100644
--- a/package.json
+++ b/package.json
@@ -2,9 +2,9 @@
     "name": "stripe-javascript-interview-prep",
     "version": "1.0.0",
     "description": "A simple example of using node-fetch",
-    "main": "hello-world.js",
+    "main": "hello-world.mjs",
     "scripts": {
-      "start": "node hello-world.js"
+      "start": "node hello-world.mjs"
     },
     "dependencies": {
       "node-fetch": "^3.2.0"
@@ -13,4 +13,4 @@
       "node": ">=18.x"
     }
   }
-  
\ No newline at end of file
+