diff --git a/bb b/bb
index e26281d41..2882d7192 100755
--- a/bb
+++ b/bb
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2019 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
diff --git a/cipd b/cipd
index df485c1bd..e7b39e3f4 100755
--- a/cipd
+++ b/cipd
@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 
 # Copyright (c) 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
diff --git a/led b/led
index c273aa088..bc71abad5 100755
--- a/led
+++ b/led
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
diff --git a/luci-auth b/luci-auth
index e2c50c084..02a7f4f1e 100755
--- a/luci-auth
+++ b/luci-auth
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
diff --git a/lucicfg b/lucicfg
index 87989fc4e..49e207a33 100755
--- a/lucicfg
+++ b/lucicfg
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2019 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
diff --git a/mac_toolchain b/mac_toolchain
index ef4beaef7..baa2f3738 100755
--- a/mac_toolchain
+++ b/mac_toolchain
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
diff --git a/prpc b/prpc
index 74153b796..486081091 100755
--- a/prpc
+++ b/prpc
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
diff --git a/vpython b/vpython
index 9befaa690..eee9537aa 100755
--- a/vpython
+++ b/vpython
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be