diff --git a/examples/gcp/postgresql/main.tf b/examples/gcp/postgresql/main.tf
index eb5161f6..e9fd6f44 100644
--- a/examples/gcp/postgresql/main.tf
+++ b/examples/gcp/postgresql/main.tf
@@ -1,4 +1,5 @@
 variable "name_prefix" {}
+variable "vpc_name_prefix" {}
 variable "gcp_project" {}
 variable "destroyable_postgres" {
   default = false
@@ -9,6 +10,7 @@ module "postgresql" {
   # source = "../../../modules/postgresql/gcp"
 
   instance_name          = "${var.name_prefix}-pg"
+  vpc_name               = "${var.vpc_name_prefix}-vpc"
   vpc_name               = "${var.name_prefix}-vpc"
   gcp_project            = var.gcp_project
   destroyable            = var.destroyable_postgres
diff --git a/modules/postgresql/gcp/read-replica.tf b/modules/postgresql/gcp/read-replica.tf
index 042e96c4..2c548a7d 100644
--- a/modules/postgresql/gcp/read-replica.tf
+++ b/modules/postgresql/gcp/read-replica.tf
@@ -7,6 +7,7 @@ resource "google_sql_database_instance" "replica" {
   database_version    = "POSTGRES_14"
   region              = local.region
   deletion_protection = !local.destroyable
+  depends_on          = [google_sql_database_instance.instance]
 
   settings {
     tier              = local.tier