diff --git a/e2e_tests/helpers.py b/e2e_tests/helpers.py
index 0218890..610cc37 100644
--- a/e2e_tests/helpers.py
+++ b/e2e_tests/helpers.py
@@ -25,7 +25,7 @@ def grm(args, cwd=None, is_invalid=False):
 
 
 def shell(script):
-    script = "set -o errexit\nset -o nounset\n" + script
+    script = "set -o errexit\nset -o nounset\nset -o pipefail\n" + script
     subprocess.run(["bash"], input=script, text=True, check=True)