diff --git a/scripts/backup.sh b/scripts/backup.sh
index 2203e4e..7e65ce3 100755
--- a/scripts/backup.sh
+++ b/scripts/backup.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env sh
+#!/usr/bin/env bash
 
 # Adjustable parameters
 ## The number of backups to keep