diff --git a/modules/kubernetes-cluster/CHANGELOG.md b/modules/kubernetes-cluster/CHANGELOG.md
index 825c32f..5466a3f 100644
--- a/modules/kubernetes-cluster/CHANGELOG.md
+++ b/modules/kubernetes-cluster/CHANGELOG.md
@@ -1 +1,4 @@
 # Changelog
+
+## 1.1
+* Added `node_resource_group_id` output.
diff --git a/modules/kubernetes-cluster/README.md b/modules/kubernetes-cluster/README.md
index 52e0b49..bae8331 100644
--- a/modules/kubernetes-cluster/README.md
+++ b/modules/kubernetes-cluster/README.md
@@ -8,14 +8,15 @@ This module creates a [Kubernetes Cluster](https://registry.terraform.io/provide
 module "kubernetes_cluster" {
   source = "https://github.com/gofrontier-com/azurerm-terraform-modules/releases/download/kubernetes-cluster/[VERSION]/module.tar.gz//src"
 
-  environment                = "dev"
-  identifier                 = "mortgages"
+  environment         = "dev"
+  identifier          = "creditcards"
+  location            = "uksouth"
+  resource_group_name = module.resource_group.name
+  zone                = "cus"
+
   kubernetes_version         = "1.28.1"
-  location                   = "uksouth"
   log_analytics_workspace_id = data.azurerm_log_analytics_workspace.main.id
-  resource_group_name        = module.resource_group.name
   subnet_id                  = data.azurerm_subnet.k8s.id
-  zone                       = "shd"
 
   tags = {
     WorkloadType = "CustomerBankingLZ/container-platform"
diff --git a/modules/kubernetes-cluster/VERSION b/modules/kubernetes-cluster/VERSION
index d3827e7..9459d4b 100644
--- a/modules/kubernetes-cluster/VERSION
+++ b/modules/kubernetes-cluster/VERSION
@@ -1 +1 @@
-1.0
+1.1
diff --git a/modules/kubernetes-cluster/src/main.tf b/modules/kubernetes-cluster/src/main.tf
index ed26fd0..5879ef4 100644
--- a/modules/kubernetes-cluster/src/main.tf
+++ b/modules/kubernetes-cluster/src/main.tf
@@ -27,15 +27,24 @@ resource "azurerm_kubernetes_cluster" "main" {
     vnet_subnet_id              = var.subnet_id
     zones                       = var.zones
 
+    upgrade_settings {
+      max_surge = "10%"
+    }
+
     tags = merge(var.tags, local.tags)
   }
 
-  api_server_access_profile {
-    authorized_ip_ranges = var.authorized_ip_ranges
+  dynamic "api_server_access_profile" {
+    for_each = length(var.authorized_ip_ranges) > 0 ? [{}] : []
+
+    content {
+      authorized_ip_ranges = var.authorized_ip_ranges
+    }
   }
 
   identity {
-    type = "SystemAssigned"
+    type         = "SystemAssigned"
+    identity_ids = []
   }
 
   key_vault_secrets_provider {
diff --git a/modules/kubernetes-cluster/src/outputs.tf b/modules/kubernetes-cluster/src/outputs.tf
index d1929e4..8e3b204 100644
--- a/modules/kubernetes-cluster/src/outputs.tf
+++ b/modules/kubernetes-cluster/src/outputs.tf
@@ -22,3 +22,7 @@ output "kube_config" {
 output "node_resource_group" {
   value = azurerm_kubernetes_cluster.main.node_resource_group
 }
+
+output "node_resource_group_id" {
+  value = "${split(var.resource_group_name, azurerm_kubernetes_cluster.main.id)[0]}${azurerm_kubernetes_cluster.main.node_resource_group}"
+}
diff --git a/modules/kubernetes-cluster/test/main.tf b/modules/kubernetes-cluster/test/main.tf
index b7b8b6d..55a4209 100644
--- a/modules/kubernetes-cluster/test/main.tf
+++ b/modules/kubernetes-cluster/test/main.tf
@@ -5,14 +5,15 @@ provider "azurerm" {
 module "kubernetes_cluster" {
   source = "../src"
 
-  environment                = "foo"
-  identifier                 = "bar"
+  environment         = "foo"
+  identifier          = "bar"
+  location            = "uksouth"
+  resource_group_name = "qux"
+  zone                = "corge"
+
   kubernetes_version         = "1.2.3"
-  location                   = "uksouth"
   log_analytics_workspace_id = "baz"
-  resource_group_name        = "qux"
   subnet_id                  = "quux"
-  zone                       = "corge"
 
   tags = {
     Foo = "Bar"