diff --git a/variables.tf b/variables.tf
index 57e3b50d..10db5529 100644
--- a/variables.tf
+++ b/variables.tf
@@ -277,7 +277,7 @@ variable "cluster_autoscaler_image" {
 variable "cluster_autoscaler_version" {
   type        = string
   default     = "v1.30.3"
-  description = "Version of Kubernetes Cluster Autoscaler for Hetzner Cloud. Should be aligned with Kubernetes version"
+  description = "Version of Kubernetes Cluster Autoscaler for Hetzner Cloud. Should be aligned with Kubernetes version. Available versions for the official image can be found at https://explore.ggcr.dev/?repo=registry.k8s.io%2Fautoscaling%2Fcluster-autoscaler."
 }
 
 variable "cluster_autoscaler_log_level" {
@@ -354,13 +354,13 @@ variable "autoscaler_taints" {
 variable "hetzner_ccm_version" {
   type        = string
   default     = null
-  description = "Version of Kubernetes Cloud Controller Manager for Hetzner Cloud."
+  description = "Version of Kubernetes Cloud Controller Manager for Hetzner Cloud. See https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases for the available versions."
 }
 
 variable "hetzner_csi_version" {
   type        = string
   default     = null
-  description = "Version of Container Storage Interface driver for Hetzner Cloud."
+  description = "Version of Container Storage Interface driver for Hetzner Cloud. See https://github.com/hetznercloud/csi-driver/releases for the available versions."
 }
 
 variable "hetzner_csi_values" {
@@ -477,7 +477,7 @@ variable "traefik_additional_trusted_ips" {
 variable "traefik_version" {
   type        = string
   default     = ""
-  description = "Version of Traefik helm chart."
+  description = "Version of Traefik helm chart. See https://github.com/traefik/traefik-helm-chart/releases for the available versions."
 }
 
 variable "traefik_values" {
@@ -489,7 +489,7 @@ variable "traefik_values" {
 variable "nginx_version" {
   type        = string
   default     = ""
-  description = "Version of Nginx helm chart."
+  description = "Version of Nginx helm chart. See https://github.com/kubernetes/ingress-nginx?tab=readme-ov-file#supported-versions-table for the available versions."
 }
 
 variable "nginx_values" {
@@ -543,7 +543,7 @@ variable "enable_metrics_server" {
 variable "initial_k3s_channel" {
   type        = string
   default     = "v1.30" # Please update kube.tf.example too when changing this variable
-  description = "Allows you to specify an initial k3s channel."
+  description = "Allows you to specify an initial k3s channel. See https://update.k3s.io/v1-release/channels for available channels."
 
   validation {
     condition     = contains(["stable", "latest", "testing", "v1.16", "v1.17", "v1.18", "v1.19", "v1.20", "v1.21", "v1.22", "v1.23", "v1.24", "v1.25", "v1.26", "v1.27", "v1.28", "v1.29", "v1.30", "v1.31", "v1.32", "v1.33"], var.initial_k3s_channel)
@@ -554,7 +554,7 @@ variable "initial_k3s_channel" {
 variable "install_k3s_version" {
   type        = string
   default     = ""
-  description = "Allows you to specify the k3s version (Example: v1.29.6+k3s2). Supersedes initial_k3s_channel."
+  description = "Allows you to specify the k3s version (Example: v1.29.6+k3s2). Supersedes initial_k3s_channel. See https://github.com/k3s-io/k3s/releases for available versions."
 }
 
 variable "system_upgrade_enable_eviction" {
@@ -700,7 +700,7 @@ variable "cilium_values" {
 variable "cilium_version" {
   type        = string
   default     = "1.15.1"
-  description = "Version of Cilium."
+  description = "Version of Cilium. See https://github.com/cilium/cilium/releases for the available versions."
 }
 
 variable "calico_values" {
@@ -788,7 +788,7 @@ variable "enable_csi_driver_smb" {
 variable "csi_driver_smb_version" {
   type        = string
   default     = "*"
-  description = "Version of csi_driver_smb."
+  description = "Version of csi_driver_smb. See https://github.com/kubernetes-csi/csi-driver-smb/releases for the available versions."
 }
 
 variable "csi_driver_smb_helmchart_bootstrap" {
@@ -912,7 +912,7 @@ variable "rancher_values" {
 variable "kured_version" {
   type        = string
   default     = null
-  description = "Version of Kured."
+  description = "Version of Kured. See https://github.com/kubereboot/kured/releases for the available versions."
 }
 
 variable "kured_options" {
@@ -1048,7 +1048,7 @@ variable "additional_tls_sans" {
 variable "calico_version" {
   type        = string
   default     = null
-  description = "Version of Calico."
+  description = "Version of Calico. See https://github.com/projectcalico/calico/releases for the available versions."
 }
 
 variable "k3s_exec_server_args" {
@@ -1135,5 +1135,5 @@ variable "keep_disk_cp" {
 variable "sys_upgrade_controller_version" {
   type        = string
   default     = "v0.14.2"
-  description = "Version of the System Upgrade Controller for automated upgrades of k3s"
+  description = "Version of the System Upgrade Controller for automated upgrades of k3s. See https://github.com/rancher/system-upgrade-controller/releases for the available versions."
 }