diff --git a/pkgbuild.sh b/pkgbuild.sh
index 95ea256..40fd162 100755
--- a/pkgbuild.sh
+++ b/pkgbuild.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -euo pipefail
+
 pacman -Syu --noconfirm --needed base-devel
 
 useradd calbuilder -m