diff --git a/helloworld-downloader.sh b/helloworld-downloader.sh
index 7d453dc..5dc9c99 100644
--- a/helloworld-downloader.sh
+++ b/helloworld-downloader.sh
@@ -1,4 +1,9 @@
 #!/bin/bash
+set -o errexit
+#set -o pipefail ## it's failing for line 82 + 86 in downloader
+set -o nounset
+IFS=$'\n\t'
+
 # ------------------------------------------------------------------
 # [Author] joergi - https://github.com/joergi/WireframeDownloader
 #          downloader for all Wireframe magzine issues
@@ -25,6 +30,6 @@ recentIssue=$(cat "$file");
 # workaround for a known limitation in bash 3.x: http://lists.gnu.org/archive/html/bug-bash/2006-01/msg00018.html
 # stackoverflow: https://stackoverflow.com/questions/32596123/why-source-command-doesnt-work-with-process-substitution-in-bash-3-2/32596626#32596626
 # shellcheck disable=SC1091
-source /dev/stdin <<<"$(curl -s https://raw.githubusercontent.com/joergi/downloader/0.4.3/linux_mac/downloader.sh)" "$downloadUrl" "$OUTDIR" "$recentIssue" "$@"
+source /dev/stdin <<<"$(curl -s https://raw.githubusercontent.com/joergi/downloader/0.4.5/linux_mac/downloader.sh)" "$downloadUrl" "$OUTDIR" "$recentIssue" "$@"
 
 exit 0