diff --git a/cleanup.sh b/cleanup.sh
index 73fd368..582b49a 100755
--- a/cleanup.sh
+++ b/cleanup.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 DIRECTORY=$1
 EXTENSION=$2
diff --git a/download.sh b/download.sh
index 070bdaf..4ca5ea2 100755
--- a/download.sh
+++ b/download.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 ARTIFACT=$1
 OUTPUT=$2