diff --git a/backup.sh b/backup.sh
index e745ca7..7c8586c 100755
--- a/backup.sh
+++ b/backup.sh
@@ -1,6 +1,5 @@
-#! /bin/sh
-
-set -e
+#!/usr/bin/env bash
+set -Eeo pipefail
 
 if [ "${POSTGRES_DB}" = "**None**" -a "${POSTGRES_DB_FILE}" = "**None**" ]; then
   echo "You need to set the POSTGRES_DB or POSTGRES_DB_FILE environment variable."