diff --git a/install.sh b/install.sh
index d7f1139..96a1378 100644
--- a/install.sh
+++ b/install.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -euo pipefail
+
 app_name=zen
 literal_name_of_installation_directory=".tarball-installations"
 universal_path_for_installation_directory="$HOME/$literal_name_of_installation_directory"