diff --git a/docs/modules/ROOT/pages/references/terraform_modules/eks/aws.adoc b/docs/modules/ROOT/pages/references/terraform_modules/eks/aws.adoc
index 0630f148c8..02d8d739eb 100644
--- a/docs/modules/ROOT/pages/references/terraform_modules/eks/aws.adoc
+++ b/docs/modules/ROOT/pages/references/terraform_modules/eks/aws.adoc
@@ -117,7 +117,7 @@ The `eks/aws` Terraform module provides a way to install and configure:
 |[[input_cluster_version]] <<input_cluster_version,cluster_version>>
 |Kubernetes version to use for the EKS cluster.
 |`string`
-|`"1.18"`
+|`"1.21"`
 |no
 
 |[[input_cognito_user_pool_domain]] <<input_cognito_user_pool_domain,cognito_user_pool_domain>>
diff --git a/modules/eks/aws/variables.tf b/modules/eks/aws/variables.tf
index ef95919266..012c883814 100644
--- a/modules/eks/aws/variables.tf
+++ b/modules/eks/aws/variables.tf
@@ -1,7 +1,7 @@
 variable "cluster_version" {
   description = "Kubernetes version to use for the EKS cluster."
   type        = string
-  default     = "1.18"
+  default     = "1.21"
 }
 
 variable "base_domain" {