diff --git a/scripts/bootstrap-unreleased.sh b/scripts/bootstrap-unreleased.sh
index 55d69ea87..f12dcd89d 100755
--- a/scripts/bootstrap-unreleased.sh
+++ b/scripts/bootstrap-unreleased.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 ##
 # Copyright 2016 Google Inc. All Rights Reserved.
diff --git a/scripts/update-styling.sh b/scripts/update-styling.sh
index c6f69a3c7..4fd2f63b4 100755
--- a/scripts/update-styling.sh
+++ b/scripts/update-styling.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 ##
 # Copyright 2016 Google Inc. All Rights Reserved.