diff --git a/terraform/modules/network/main.tf b/terraform/modules/network/main.tf
index 7125b72..3688c6f 100644
--- a/terraform/modules/network/main.tf
+++ b/terraform/modules/network/main.tf
@@ -1,77 +1,77 @@
-resource "google-compute-network" "vpc" {
+resource "google_compute_network" "vpc" {
   name                    = "vpcsim"
-  auto-create-subnetworks = false
+  auto_create_subnetworks = false
 }
 
-resource "google-compute-subnetwork" "frontend" {
+resource "google_compute_subnetwork" "frontend" {
   name          = "frontend"
-  network       = google-compute-network.vpc.id
-  ip-cidr-range = var.frontend-cidr
+  network       = google_compute_network.vpc.id
+  ip_cidr_range = var.frontend_cidr
   region        = var.region
 }
 
-resource "google-compute-subnetwork" "backend" {
+resource "google_compute_subnetwork" "backend" {
   name          = "backend"
-  network       = google-compute-network.vpc.id
-  ip-cidr-range = var.backend-cidr
+  network       = google_compute_network.vpc.id
+  ip_cidr_range = var.backend_cidr
   region        = var.region
 }
 
-resource "google-compute-subnetwork" "database" {
+resource "google_compute_subnetwork" "database" {
   name          = "database"
-  network       = google-compute-network.vpc.id
-  ip-cidr-range = var.database-cidr
+  network       = google_compute_network.vpc.id
+  ip_cidr_range = var.database_cidr
   region        = var.region
 }
 
-resource "google-compute-firewall" "allow-http-https" {
+resource "google_compute_firewall" "allow-http-https" {
   name    = "allow-http-https"
-  network = google-compute-network.vpc.id
+  network = google_compute_network.vpc.id
 
   allow {
     protocol = "tcp"
     ports    = ["80", "443"]
   }
 
-  source-ranges = ["0.0.0.0/0"]
-  target-tags   = ["web"]
+  source_ranges = ["0.0.0.0/0"]
+  target_tags   = ["web"]
 }
 
-resource "google-compute-firewall" "allow-ssh" {
+resource "google_compute_firewall" "allow-ssh" {
   name    = "allow-ssh"
-  network = google-compute-network.vpc.id
+  network = google_compute_network.vpc.id
 
   allow {
     protocol = "tcp"
     ports    = ["22"]
   }
 
-  source-ranges = var.ssh-source-ranges
-  target-tags   = ["ssh"]
+  source_ranges = [var.ssh_source_ranges]
+  target_tags   = ["ssh"]
 }
 
-resource "google-compute-firewall" "front-to-back" {
-  name    = "front-to-back"
-  network = google-compute-network.vpc.id
+resource "google_compute_firewall" "front-to-back" {
+  name    = "front-to_back"
+  network = google_compute_network.vpc.id
 
   allow {
     protocol = "tcp"
     ports    = ["8000"]
   }
 
-  source-ranges = var.frontend-cidr
-  target-tags   = ["backend"]
+  source_ranges = [var.frontend_cidr]
+  target_tags   = ["backend"]
 }
 
-resource "google-compute-firewall" "back-to-db" {
-  name    = "back-to-db"
-  network = google-compute-network.vpc.id
+resource "google_compute_firewall" "back_to_db" {
+  name    = "back_to_db"
+  network = google_compute_network.vpc.id
 
   allow {
     protocol = "tcp"
     ports    = ["3306"]
   }
 
-  source-ranges = var.backend-cidr
-  target-tags   = ["database"]
+  source_ranges = [var.backend_cidr]
+  target_tags   = ["database"]
 }
\ No newline at end of file