diff --git a/deploy/cloudnativepg/postgres-base.yaml b/deploy/cloudnativepg/postgres-base.yaml
index 5f6a166..d5b0056 100644
--- a/deploy/cloudnativepg/postgres-base.yaml
+++ b/deploy/cloudnativepg/postgres-base.yaml
@@ -4,7 +4,7 @@ metadata:
   name: postgres-base
   namespace: postgres
 spec:
-  instances: 3
+  instances: 1
   storage:
     size: 50Gi
     storageClassName: longhorn