diff --git a/amo-version.sh b/amo-version.sh
index 6f7bab3..bae6e6a 100755
--- a/amo-version.sh
+++ b/amo-version.sh
@@ -1,4 +1,4 @@
-#! /usr/bin/env sh
+#! /usr/bin/env bash
 
 curl -s "https://addons.mozilla.org/api/v5/addons/addon/$1/versions/?page_size=1" | jq '.results | .[0] | .file | .url' | tr -d '"'
 
diff --git a/build.sh b/build.sh
index d2eba28..a381914 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#! /usr/bin/env bash
 set -e 
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
diff --git a/clean.sh b/clean.sh
index 1fbbe33..9e16d66 100755
--- a/clean.sh
+++ b/clean.sh
@@ -1,4 +1,4 @@
-#! /usr/bin/env sh
+#! /usr/bin/env bash
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 cd "$SCRIPT_DIR" || exit 1
diff --git a/config.sh b/config.sh
index 6bcd091..0266225 100755
--- a/config.sh
+++ b/config.sh
@@ -1,3 +1,4 @@
+#! /usr/bin/env bash
 
 ## If you need to use a different JVM, JDK, or other utility from
 # build.sh, set it in this file, for example:
diff --git a/daily.sh b/daily.sh
index 0813b9b..ee581ac 100755
--- a/daily.sh
+++ b/daily.sh
@@ -1,4 +1,4 @@
-#! /usr/bin/env sh
+#! /usr/bin/env bash
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 cd "$SCRIPT_DIR" || exit 1
diff --git a/release.sh b/release.sh
index 919f6bf..57f49dc 100755
--- a/release.sh
+++ b/release.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#! /usr/bin/env bash
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 cd "$SCRIPT_DIR" || exit 1
diff --git a/sign.sh b/sign.sh
index adadb5d..fc1a6ee 100755
--- a/sign.sh
+++ b/sign.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#! /usr/bin/env bash
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 cd "$SCRIPT_DIR" || exit 1
diff --git a/unsigned.sh b/unsigned.sh
index f95a981..4a5d7da 100755
--- a/unsigned.sh
+++ b/unsigned.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#! /usr/bin/env bash
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 cd "$SCRIPT_DIR" || exit 1