diff --git a/.github/workflows/sync-cloud-run-env.yml b/.github/workflows/sync-cloud-run-env.yml
index 8736122..1a2ed3d 100644
--- a/.github/workflows/sync-cloud-run-env.yml
+++ b/.github/workflows/sync-cloud-run-env.yml
@@ -804,5 +804,6 @@ jobs:
             gcloud artifacts docker images delete "${image_repo}@${digest}" \
               --project="${GCP_PROJECT_ID}" \
               --delete-tags \
+              --async \
               --quiet
           done <<< "${old_digests}"