diff --git a/internal/config/config.go b/internal/config/config.go
index 19b5beb80..539e6f9d6 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -69,7 +69,7 @@ type Config struct {
 	Name string `yaml:"name" validate:"valid_name,required"`
 	// description: |
 	//   Kubernetes version to be installed into the cluster.
-	KubernetesVersion string `yaml:"kubernetesVersion" validate:"required,supported_k8s_version"`
+	KubernetesVersion versions.ValidK8sVersion `yaml:"kubernetesVersion" validate:"required,supported_k8s_version"`
 	// description: |
 	//   Microservice version to be installed into the cluster. Defaults to the version of the CLI.
 	MicroserviceVersion semver.Semver `yaml:"microserviceVersion" validate:"required"`