diff --git a/api/download_sources.sh b/api/download_sources.sh
index 39bfe136..af1a2be1 100644
--- a/api/download_sources.sh
+++ b/api/download_sources.sh
@@ -1,5 +1,9 @@
-#!/bin/bash
-set -e
+#!/usr/bin/env bash
+
+set -o errexit
+set -o errtrace
+set -o nounset
+set -o pipefail
 
 skip_license () {
   copyright_file="$1"
@@ -138,4 +142,4 @@ for package in `grep -Fxv -f pre_installed.txt post_installed.txt`; do
 done
 
 apt-get clean > /dev/null 2>&1
-rm -rf /var/lib/apt/lists/*
\ No newline at end of file
+rm -rf /var/lib/apt/lists/*