diff --git a/cli/internal/terraform/terraform/gcp/main.tf b/cli/internal/terraform/terraform/gcp/main.tf
index 2d784c831..593b4ad23 100644
--- a/cli/internal/terraform/terraform/gcp/main.tf
+++ b/cli/internal/terraform/terraform/gcp/main.tf
@@ -128,6 +128,7 @@ module "instance_group_control_plane" {
   network        = google_compute_network.vpc_network.id
   subnetwork     = google_compute_subnetwork.vpc_subnetwork.id
   kube_env       = local.kube_env
+  debug          = var.debug
   named_ports = flatten([
     { name = "kubernetes", port = local.ports_kubernetes },
     { name = "bootstrapper", port = local.ports_bootstrapper },
@@ -151,6 +152,7 @@ module "instance_group_worker" {
   network        = google_compute_network.vpc_network.id
   subnetwork     = google_compute_subnetwork.vpc_subnetwork.id
   kube_env       = local.kube_env
+  debug          = var.debug
 }
 
 resource "google_compute_global_address" "loadbalancer_ip" {
diff --git a/cli/internal/terraform/terraform/gcp/modules/instance_group/main.tf b/cli/internal/terraform/terraform/gcp/modules/instance_group/main.tf
index 5501031df..c326bbaa4 100644
--- a/cli/internal/terraform/terraform/gcp/modules/instance_group/main.tf
+++ b/cli/internal/terraform/terraform/gcp/modules/instance_group/main.tf
@@ -43,6 +43,7 @@ resource "google_compute_instance_template" "template" {
     kube-env           = var.kube_env
     constellation-uid  = var.uid
     constellation-role = var.role
+    serial-port-enable = var.debug ? "TRUE" : "FALSE"
   }
 
   network_interface {
@@ -77,8 +78,9 @@ resource "google_compute_instance_template" "template" {
   }
 }
 
-resource "google_compute_instance_group_manager" "instance_group_manager" {
+resource "google_compute_region_instance_group_manager" "instance_group_manager" {
   name               = local.name
+  description        = "Instance group manager for Constellation"
   base_instance_name = local.name
   target_size        = var.instance_count
 
diff --git a/cli/internal/terraform/terraform/gcp/modules/instance_group/outputs.tf b/cli/internal/terraform/terraform/gcp/modules/instance_group/outputs.tf
index 66f793fb0..108899000 100644
--- a/cli/internal/terraform/terraform/gcp/modules/instance_group/outputs.tf
+++ b/cli/internal/terraform/terraform/gcp/modules/instance_group/outputs.tf
@@ -1,3 +1,3 @@
 output "instance_group" {
-  value = google_compute_instance_group_manager.instance_group_manager.instance_group
+  value = google_compute_region_instance_group_manager.instance_group_manager.instance_group
 }
diff --git a/cli/internal/terraform/terraform/gcp/modules/instance_group/variables.tf b/cli/internal/terraform/terraform/gcp/modules/instance_group/variables.tf
index b091d0b47..a70784ed1 100644
--- a/cli/internal/terraform/terraform/gcp/modules/instance_group/variables.tf
+++ b/cli/internal/terraform/terraform/gcp/modules/instance_group/variables.tf
@@ -58,3 +58,9 @@ variable "named_ports" {
   default     = []
   description = "Named ports for the instance group."
 }
+
+variable "debug" {
+  type        = bool
+  default     = false
+  description = "Enable debug mode. This will enable serial port access on the instances."
+}