diff --git a/esbuild.config.mjs b/esbuild.config.mjs
index a6ba2bb..c9d19e5 100644
--- a/esbuild.config.mjs
+++ b/esbuild.config.mjs
@@ -12,4 +12,7 @@ build({
   logLevel: 'info',
   minify: false,
   keepNames: true, // optional: keeps function/class names
+  banner: {
+    js: `// Vitor Hideyoshi <vitor.h.n.batista@gmail.com> - ${new Date().toISOString()}\n`
+  },
 }).catch(() => process.exit(1));