diff --git a/cloudbuild.yaml b/cloudbuild.yaml
index 418b09a..37c8f6a 100644
--- a/cloudbuild.yaml
+++ b/cloudbuild.yaml
@@ -81,4 +81,4 @@ options:
   env:
     #    # location/name of GKE cluster (used by all kubectl commands)
     - CLOUDSDK_COMPUTE_ZONE=asia-northeast1-a
-    - CLOUDSDK_CONTAINER_CLUSTER=standard-cluster-1
\ No newline at end of file
+    - CLOUDSDK_CONTAINER_CLUSTER=standard-cluster-3