diff --git a/modules/azure-aks/variables.tf b/modules/azure-aks/variables.tf
index 89de072..7c32e1b 100644
--- a/modules/azure-aks/variables.tf
+++ b/modules/azure-aks/variables.tf
@@ -1,21 +1,25 @@
 variable "location" {
   description = "The location where the resources will be created."
   default     = "East US"
+  type        = string
 }
 
 variable "resource_group_name" {
   description = "The name of the resource group"
   default     = "aks-rg"
+  type        = string
 }
 
 variable "aks_cluster_name" {
   description = "The name of the AKS cluster."
   default     = "aks-cluster"
+  type        = string
 }
 
 variable "dns_prefix" {
   description = "The DNS prefix for the AKS cluster."
   default     = "aks"
+  type        = string
 }
 
 variable "tags" {