diff --git a/qryn_bun.mjs b/qryn_bun.mjs
index 806f2ab7..7ed1e6b8 100644
--- a/qryn_bun.mjs
+++ b/qryn_bun.mjs
@@ -1,3 +1,10 @@
+#!/usr/bin/env bun
+
+/*
+ * qryn: polyglot observability API
+ * (C) 2018-2024 QXIP BV
+ */
+
 import { Router } from '@stricjs/router';
 import { wrapper, wsWrapper } from './lib/bun_wrapper.js';