diff --git a/terraform/environments/dev/variables.tf b/terraform/environments/dev/variables.tf
index 8f96b4d..e0e7bef 100644
--- a/terraform/environments/dev/variables.tf
+++ b/terraform/environments/dev/variables.tf
@@ -9,7 +9,7 @@ variable "project_name" {
 variable "region" {
   description = "Region du projet"
   type        = string
-  default     = "europe-west9-b"
+  default     = "europe-west9"
 }
 
 variable "frontend_cidr" {
diff --git a/terraform/modules/network/main.tf b/terraform/modules/network/main.tf
index 01557d0..543309c 100644
--- a/terraform/modules/network/main.tf
+++ b/terraform/modules/network/main.tf
@@ -17,22 +17,22 @@ resource "google_compute_network" "vpc_terraform" {
 resource "google_compute_subnetwork" "subnet_frontend" {
   name          = "frontend"
   network       = google_compute_network.vpc_terraform.id
-  ip_cidr_range = "10.0.1.0/24"
-  region        = "europe-west9-b"
+  ip_cidr_range = var.frontend_cidr
+  region        = var.region
 }
 
 resource "google_compute_subnetwork" "subnet_backend" {
   name          = "backend"
   network       = google_compute_network.vpc_terraform.id
-  ip_cidr_range = "10.0.2.0/24"
-  region        = "europe-west9-b"
+  ip_cidr_range = var.frontend_cidr
+  region        = var.region
 }
 
 resource "google_compute_subnetwork" "subnet_database" {
   name          = "database"
   network       = google_compute_network.vpc_terraform.id
-  ip_cidr_range = "10.0.3.0/24"
-  region        = "europe-west9-b"
+  ip_cidr_range = var.frontend_cidr
+  region        = var.region
 }
 
 resource "google_compute_firewall" "allow_user_frontend" {