diff --git a/rollup.config.js b/rollup.config.js
index af6a79b..e8e8e5a 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -19,7 +19,7 @@ export default [
         output: [
             {
                 file: `${dist}/${name}.js`,
-                format: 'esm',
+                format: 'umd',
                 sourcemap: true,
                 freeze: false,
                 banner,