diff --git a/postgres/index.ts b/postgres/index.ts
index 848702b..77ca590 100644
--- a/postgres/index.ts
+++ b/postgres/index.ts
@@ -319,7 +319,7 @@ export class PostgresCluster extends Construct {
           namespace: options.namespace,
         },
         spec: {
-          instances: 3,
+          instances: 1,
           maxSyncReplicas: 0,
           primaryUpdateStrategy: "unsupervised",
           certificates: {