diff --git a/cilium.tf b/cilium.tf
index 37953d0..2de35ea 100644
--- a/cilium.tf
+++ b/cilium.tf
@@ -5,8 +5,8 @@ data "helm_template" "cilium" {
   namespace    = "kube-system"
   chart        = "cilium"
   repository   = "https://helm.cilium.io/"
-  version      = "1.16.0-rc.0" # TODO: optional specific version
-  kube_version = "1.29"        # TODO: use installed?
+  version      = var.cilium_version
+  kube_version = var.kubernetes_version
   atomic       = true
 
   # features
diff --git a/variables.tf b/variables.tf
index 7a71bc7..0b16b7e 100644
--- a/variables.tf
+++ b/variables.tf
@@ -10,6 +10,7 @@ variable "talos_num_wk" {
 variable "talos_version" {
   type        = string
   description = "talos image version"
+  default     = "1.8.3"
 }
 
 variable "talos_cluster_name" {
@@ -20,7 +21,13 @@ variable "talos_cluster_name" {
 variable "kubernetes_version" {
   type        = string
   description = "kubernetes image version"
-  default     = ""
+  default     = "1.31"
+}
+
+variable "cilium_version" {
+  type        = string
+  description = "cilium version"
+  default     = "1.16"
 }
 
 variable "subdomain" {