diff --git a/manifests/database.yaml b/manifests/database.yaml
index 8373575..8d9b84e 100644
--- a/manifests/database.yaml
+++ b/manifests/database.yaml
@@ -6,7 +6,7 @@ metadata:
 
 spec:
   imageName: ghcr.io/tensorchord/cloudnative-pgvecto.rs:16.5-v0.3.0
-  instances: 3
+  instances: 1
 
   storage:
     size: 1Gi