diff --git a/.travis/test-example-dockerfiles.sh b/.travis/test-example-dockerfiles.sh
index 2598ed6d..e28a7d7f 100755
--- a/.travis/test-example-dockerfiles.sh
+++ b/.travis/test-example-dockerfiles.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 image="$1"
diff --git a/generate-stackbrew-library.sh b/generate-stackbrew-library.sh
index e5ee7efe..b747bc40 100755
--- a/generate-stackbrew-library.sh
+++ b/generate-stackbrew-library.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -Eeuo pipefail
 
 stable_channel='22.2.3'
diff --git a/update.sh b/update.sh
index a75c926c..7d8db8c8 100755
--- a/update.sh
+++ b/update.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -eo pipefail
 
 declare -A php_version=(