diff --git a/scripts/delete_project.sh b/scripts/delete_project.sh
index 1ba910f..241cd33 100755
--- a/scripts/delete_project.sh
+++ b/scripts/delete_project.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/scripts/deploy_api.sh b/scripts/deploy_api.sh
index c3ca52e..17b0c5c 100755
--- a/scripts/deploy_api.sh
+++ b/scripts/deploy_api.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/scripts/deploy_app.sh b/scripts/deploy_app.sh
index 85271e3..e1e2ad2 100755
--- a/scripts/deploy_app.sh
+++ b/scripts/deploy_app.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/scripts/e2e_test.sh b/scripts/e2e_test.sh
index beb7d26..d73a404 100755
--- a/scripts/e2e_test.sh
+++ b/scripts/e2e_test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/scripts/generate_traffic.sh b/scripts/generate_traffic.sh
index 64985ac..35d3c2c 100755
--- a/scripts/generate_traffic.sh
+++ b/scripts/generate_traffic.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/scripts/generate_traffic_with_key.sh b/scripts/generate_traffic_with_key.sh
index 144bb9f..f3e3226 100755
--- a/scripts/generate_traffic_with_key.sh
+++ b/scripts/generate_traffic_with_key.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/scripts/query_api.sh b/scripts/query_api.sh
index fd0206e..d537810 100755
--- a/scripts/query_api.sh
+++ b/scripts/query_api.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/scripts/query_api_with_key.sh b/scripts/query_api_with_key.sh
index a7cae89..cd58671 100755
--- a/scripts/query_api_with_key.sh
+++ b/scripts/query_api_with_key.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/scripts/util.sh b/scripts/util.sh
index d7c6537..7646a70 100755
--- a/scripts/util.sh
+++ b/scripts/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");