diff --git a/terraform/environments/dev/variables.tf b/terraform/environments/dev/variables.tf
index 6f5174b..41e00a2 100644
--- a/terraform/environments/dev/variables.tf
+++ b/terraform/environments/dev/variables.tf
@@ -7,7 +7,7 @@ variable "project_name" {
 variable "region" {
   description = "La région 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 a3e1eec..573f9df 100644
--- a/terraform/modules/network/main.tf
+++ b/terraform/modules/network/main.tf
@@ -17,25 +17,24 @@ 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
 }
 
 # Sous-réseau
 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.backend_cidr
+  region        = var.region
 }
 
 # Sous-réseau
 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.database_cidr
+  region        = var.region
 }