diff --git a/services/base-image/contents/install_aws_sdk.sh b/services/base-image/contents/install_aws_sdk.sh
--- a/services/base-image/contents/install_aws_sdk.sh
+++ b/services/base-image/contents/install_aws_sdk.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/base-image/contents/install_folly.sh b/services/base-image/contents/install_folly.sh
--- a/services/base-image/contents/install_folly.sh
+++ b/services/base-image/contents/install_folly.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/base-image/contents/install_grpc.sh b/services/base-image/contents/install_grpc.sh
--- a/services/base-image/contents/install_grpc.sh
+++ b/services/base-image/contents/install_grpc.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/blob/docker/build_server.sh b/services/blob/docker/build_server.sh
--- a/services/blob/docker/build_server.sh
+++ b/services/blob/docker/build_server.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/lib/docker/build_service.sh b/services/lib/docker/build_service.sh
--- a/services/lib/docker/build_service.sh
+++ b/services/lib/docker/build_service.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/lib/docker/build_sources.sh b/services/lib/docker/build_sources.sh
--- a/services/lib/docker/build_sources.sh
+++ b/services/lib/docker/build_sources.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/lib/docker/proto_codegen.sh b/services/lib/docker/proto_codegen.sh
--- a/services/lib/docker/proto_codegen.sh
+++ b/services/lib/docker/proto_codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/lib/docker/run_service.sh b/services/lib/docker/run_service.sh
--- a/services/lib/docker/run_service.sh
+++ b/services/lib/docker/run_service.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/lib/docker/run_tests.sh b/services/lib/docker/run_tests.sh
--- a/services/lib/docker/run_tests.sh
+++ b/services/lib/docker/run_tests.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/scripts/run_local_cloud.sh b/services/scripts/run_local_cloud.sh
--- a/services/scripts/run_local_cloud.sh
+++ b/services/scripts/run_local_cloud.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/terraform/run.sh b/services/terraform/run.sh
--- a/services/terraform/run.sh
+++ b/services/terraform/run.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/tunnelbroker/docker/build_server.sh b/services/tunnelbroker/docker/build_server.sh
--- a/services/tunnelbroker/docker/build_server.sh
+++ b/services/tunnelbroker/docker/build_server.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/tunnelbroker/docker/install_amqp_cpp.sh b/services/tunnelbroker/docker/install_amqp_cpp.sh
--- a/services/tunnelbroker/docker/install_amqp_cpp.sh
+++ b/services/tunnelbroker/docker/install_amqp_cpp.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 cd /tmp
diff --git a/services/tunnelbroker/docker/install_cryptopp.sh b/services/tunnelbroker/docker/install_cryptopp.sh
--- a/services/tunnelbroker/docker/install_cryptopp.sh
+++ b/services/tunnelbroker/docker/install_cryptopp.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 cd /tmp
diff --git a/services/tunnelbroker/docker/install_folly.sh b/services/tunnelbroker/docker/install_folly.sh
--- a/services/tunnelbroker/docker/install_folly.sh
+++ b/services/tunnelbroker/docker/install_folly.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/tunnelbroker/docker/install_libuv.sh b/services/tunnelbroker/docker/install_libuv.sh
--- a/services/tunnelbroker/docker/install_libuv.sh
+++ b/services/tunnelbroker/docker/install_libuv.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 cd /tmp
diff --git a/services/tunnelbroker/docker/run_server.sh b/services/tunnelbroker/docker/run_server.sh
--- a/services/tunnelbroker/docker/run_server.sh
+++ b/services/tunnelbroker/docker/run_server.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/services/tunnelbroker/docker/run_tests.sh b/services/tunnelbroker/docker/run_tests.sh
--- a/services/tunnelbroker/docker/run_tests.sh
+++ b/services/tunnelbroker/docker/run_tests.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e