diff --git a/assets/gpg_batch.sh b/assets/gpg_batch.sh
index ff36b34..6b9c471 100755
--- a/assets/gpg_batch.sh
+++ b/assets/gpg_batch.sh
@@ -1,7 +1,8 @@
 # Copyright 2016 Bryan J. Hong
 # Licensed under the Apache License, Version 2.0
 
-#! /bin/bash
+#! /usr/bin/env bash
+
 cat << EOF > /opt/gpg_batch
 %echo Generating a GPG key, might take a while
 Key-Type: RSA
diff --git a/assets/nginx.conf.sh b/assets/nginx.conf.sh
index 29701aa..e5926c2 100755
--- a/assets/nginx.conf.sh
+++ b/assets/nginx.conf.sh
@@ -1,7 +1,7 @@
 # Copyright 2016 Bryan J. Hong
 # Licensed under the Apache License, Version 2.0
 
-#! /bin/bash
+#! /usr/bin/env bash
 
 cat << EOF > /etc/nginx/conf.d/default.conf
 server_names_hash_bucket_size 64;
diff --git a/assets/startup.sh b/assets/startup.sh
index 8afef99..2a3efa2 100755
--- a/assets/startup.sh
+++ b/assets/startup.sh
@@ -2,7 +2,7 @@
 # Copyright 2016 Bryan J. Hong
 # Licensed under the Apache License, Version 2.0
 
-#! /bin/bash
+#! /usr/bin/env bash
 
 # If the repository GPG keypair doesn't exist, create it.
 if [[ ! -f /opt/aptly/aptly.sec ]] || [[ ! -f /opt/aptly/aptly.pub ]]; then
diff --git a/assets/update_mirror_debian.sh b/assets/update_mirror_debian.sh
index f58bf0f..c782725 100755
--- a/assets/update_mirror_debian.sh
+++ b/assets/update_mirror_debian.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 set -e
 
 # Automate the initial creation and update of a Debian package mirror in aptly
diff --git a/assets/update_mirror_ubuntu.sh b/assets/update_mirror_ubuntu.sh
index f05052d..f2faa84 100755
--- a/assets/update_mirror_ubuntu.sh
+++ b/assets/update_mirror_ubuntu.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 set -e
 
 # Automate the initial creation and update of an Ubuntu package mirror in aptly