diff --git a/README.md b/README.md
index 56f61a41df..5980b48201 100644
--- a/README.md
+++ b/README.md
@@ -218,7 +218,7 @@ Apache 2 Licensed. See [LICENSE](https://github.com/terraform-aws-modules/terraf
 | <a name="input_cluster_service_ipv4_cidr"></a> [cluster\_service\_ipv4\_cidr](#input\_cluster\_service\_ipv4\_cidr) | service ipv4 cidr for the kubernetes cluster | `string` | `null` | no |
 | <a name="input_cluster_tags"></a> [cluster\_tags](#input\_cluster\_tags) | A map of tags to add to just the eks resource. | `map(string)` | `{}` | no |
 | <a name="input_cluster_update_timeout"></a> [cluster\_update\_timeout](#input\_cluster\_update\_timeout) | Timeout value when updating the EKS cluster. | `string` | `"60m"` | no |
-| <a name="input_cluster_version"></a> [cluster\_version](#input\_cluster\_version) | Kubernetes version to use for the EKS cluster. | `string` | `null` | no |
+| <a name="input_cluster_version"></a> [cluster\_version](#input\_cluster\_version) | Kubernetes minor version to use for the EKS cluster (for example 1.21). | `string` | `null` | no |
 | <a name="input_create_eks"></a> [create\_eks](#input\_create\_eks) | Controls if EKS resources should be created (it affects almost all resources) | `bool` | `true` | no |
 | <a name="input_create_fargate_pod_execution_role"></a> [create\_fargate\_pod\_execution\_role](#input\_create\_fargate\_pod\_execution\_role) | Controls if the EKS Fargate pod execution IAM role should be created. | `bool` | `true` | no |
 | <a name="input_default_platform"></a> [default\_platform](#input\_default\_platform) | Default platform name. Valid options are `linux` and `windows`. | `string` | `"linux"` | no |
diff --git a/variables.tf b/variables.tf
index 2b2763bb5f..575c76a33c 100644
--- a/variables.tf
+++ b/variables.tf
@@ -29,7 +29,7 @@ variable "cluster_security_group_id" {
 }
 
 variable "cluster_version" {
-  description = "Kubernetes version to use for the EKS cluster."
+  description = "Kubernetes minor version to use for the EKS cluster (for example 1.21)."
   type        = string
   default     = null
 }