diff --git a/package.json b/package.json
index 6831e501..da4c37a0 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "2.3.14",
   "description": "A small library for creating marquees.",
   "main": "./dist/dynamic-marquee.js",
+  "module": "./dist/dynamic-marquee.mjs",
   "types": "./dist/dynamic-marquee.d.ts",
   "scripts": {
     "build": "rollup --config rollup.config.mjs",
diff --git a/rollup.config.mjs b/rollup.config.mjs
index 7520b91a..404667c3 100644
--- a/rollup.config.mjs
+++ b/rollup.config.mjs
@@ -18,9 +18,15 @@ export default {
   onwarn: (e) => {
     throw new Error(e);
   },
-  output: {
-    name: 'dynamicMarquee',
-    file: 'dist/dynamic-marquee.js',
-    format: 'umd',
-  },
+  output: [
+    {
+      name: 'dynamicMarquee',
+      file: 'dist/dynamic-marquee.js',
+      format: 'umd',
+    },
+    {
+      file: 'dist/dynamic-marquee.mjs',
+      format: 'es',
+    },
+  ],
 };