diff --git a/src/cmd/go/mkalldocs.sh b/src/cmd/go/mkalldocs.sh
index 4e7a509805..f37d59d2d7 100755
--- a/src/cmd/go/mkalldocs.sh
+++ b/src/cmd/go/mkalldocs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2012 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.
diff --git a/src/naclmake.bash b/src/naclmake.bash
index 74fd802f41..5e6c3ce05e 100755
--- a/src/naclmake.bash
+++ b/src/naclmake.bash
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2016 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.
diff --git a/src/nacltest.bash b/src/nacltest.bash
index 3e929a14a4..dc245b484c 100755
--- a/src/nacltest.bash
+++ b/src/nacltest.bash
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2014 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.
diff --git a/src/runtime/mknacl.sh b/src/runtime/mknacl.sh
index 3454b624d6..306ae3d9c1 100644
--- a/src/runtime/mknacl.sh
+++ b/src/runtime/mknacl.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2013 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.