diff --git a/rollup.config.mjs b/rollup.config.mjs
index c1b1af31..57e47a3a 100644
--- a/rollup.config.mjs
+++ b/rollup.config.mjs
@@ -55,6 +55,11 @@ export default async () => {
 					plugins: [terser()],
 					name: "numbro"
 				},
+                            	{
+					file: path.resolve(outputFolder, "numbro.es.js"),
+					format: "es",
+					name: "numbro"
+				},
 			],
 			plugins,
 		},