diff --git a/list-bucket.sh b/list-bucket.sh
index 63ba30d..4f6fe38 100755
--- a/list-bucket.sh
+++ b/list-bucket.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -euo pipefail
+
 AccessToken=$(gcloud auth print-identity-token)
 Response=$(aws sts assume-role-with-web-identity --role-arn "${AWS_ROLE_ARN}" --role-session "cloud-guild" --web-identity-token "$AccessToken")
 export AWS_ACCESS_KEY_ID=$(echo $Response | jq -r .Credentials.AccessKeyId)