diff --git a/rollup.config.js b/rollup.config.mjs
similarity index 90%
rename from rollup.config.js
rename to rollup.config.mjs
index 95bc171..002aff5 100644
--- a/rollup.config.js
+++ b/rollup.config.mjs
@@ -1,4 +1,4 @@
-import pkg from './package.json'
+import pkg from './package.json' assert { type: 'json' }
 import json from '@rollup/plugin-json'
 import commonjs from '@rollup/plugin-commonjs'