diff --git a/misc/cgo/testso/test.bash b/misc/cgo/testso/test.bash
index f9fad126eb..f4061c68e6 100755
--- a/misc/cgo/testso/test.bash
+++ b/misc/cgo/testso/test.bash
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 # Copyright 2011 The Go Authors.  All rights reserved.
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.