diff --git a/ci/tasks/bbr-s3-config-validator-e2e-test/task.sh b/ci/tasks/bbr-s3-config-validator-e2e-test/task.sh
index 1425ce769..c900571ec 100755
--- a/ci/tasks/bbr-s3-config-validator-e2e-test/task.sh
+++ b/ci/tasks/bbr-s3-config-validator-e2e-test/task.sh
@@ -3,6 +3,7 @@
 set -euo pipefail
 
 cd bosh-backup-and-restore/s3-config-validator/src
+go mod tidy
 go mod vendor
 go run github.com/onsi/ginkgo/v2/ginkgo \
   -r \