diff --git a/Makefile b/Makefile
index b1be4d439..7d7c91580 100644
--- a/Makefile
+++ b/Makefile
@@ -120,7 +120,7 @@ terraform-init: bin/terrafile set-azure-account
 		-backend-config=storage_account_name=${AZURE_RESOURCE_PREFIX}${SERVICE_SHORT}tfstate${CONFIG_SHORT}sa \
 		-backend-config=key=${CONFIG}.tfstate
 
-	$(if $(IMAGE_TAG), , $(eval export IMAGE_TAG=sha-194cbc9))
+	$(if $(IMAGE_TAG), , $(error The IMAGE_TAG variable must be provided))
 	$(eval export TF_VAR_paas_app_docker_image=ghcr.io/dfe-digital/get-into-teaching-api:$(IMAGE_TAG))
 	$(eval export TF_VAR_azure_resource_prefix=$(AZURE_RESOURCE_PREFIX))
 	$(eval export TF_VAR_config_short=$(CONFIG_SHORT))
diff --git a/terraform/aks/config/production_aks.tfvars.json b/terraform/aks/config/production_aks.tfvars.json
index 60d7cf48b..4ce4a1f40 100644
--- a/terraform/aks/config/production_aks.tfvars.json
+++ b/terraform/aks/config/production_aks.tfvars.json
@@ -6,5 +6,9 @@
   "cluster": "production",
   "namespace": "git-production",
   "enable_monitoring": false,
-  "enable_statuscake_alerts": true
+  "enable_statuscake_alerts": true,
+  "replicas": 2,
+  "redis_capacity": 1,
+  "redis_family": "P",
+  "redis_sku_name": "Premium"
 }
diff --git a/terraform/aks/databases.tf b/terraform/aks/databases.tf
index 8553f3dd1..f10cbd162 100644
--- a/terraform/aks/databases.tf
+++ b/terraform/aks/databases.tf
@@ -14,6 +14,10 @@ module "redis-cache" {
   azure_enable_monitoring = var.enable_monitoring
   azure_patch_schedule    = [{ "day_of_week" : "Sunday", "start_hour_utc" : 01 }]
   azure_maxmemory_policy  = "allkeys-lfu"
+  server_version          = 6
+  azure_capacity          = var.redis_capacity
+  azure_family            = var.redis_family
+  azure_sku_name          = var.redis_sku_name
 }
 
 module "postgres" {
diff --git a/terraform/aks/variables.tf b/terraform/aks/variables.tf
index 4b96720dc..6cc119a03 100644
--- a/terraform/aks/variables.tf
+++ b/terraform/aks/variables.tf
@@ -43,6 +43,19 @@ variable "azure_enable_backup_storage" { default = true }
 variable "replicas" { default = 1 }
 variable "memory_max" { default = "1Gi" }
 
+variable "redis_capacity" {
+  type    = number
+  default = 1
+}
+variable "redis_family" {
+  type    = string
+  default = "C"
+}
+variable "redis_sku_name" {
+  type    = string
+  default = "Standard"
+}
+
 locals {
   azure_credentials       = try(jsondecode(var.azure_credentials), null)
   app_resource_group_name = "${var.azure_resource_prefix}-${var.service_short}-${var.config_short}-rg"