diff --git a/test/timeout.sh b/test/timeout.sh
index 160e78b..31209b1 100755
--- a/test/timeout.sh
+++ b/test/timeout.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+set -euo pipefail
 
 . $(dirname "${BASH_SOURCE[0]}")/common.sh