diff --git a/esbuild.js b/esbuild.js
index 67eb8a0..b6db3fd 100755
--- a/esbuild.js
+++ b/esbuild.js
@@ -10,7 +10,7 @@ esbuild
         minify: true,
         treeShaking: true,
         platform: 'node',
-        format: 'cjs',
+        format: 'esm',
         target: 'node18',
         plugins: [nodeExternalsPlugin()],
     })