diff --git a/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go b/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go
index ba709020d84e..ea2a5da88824 100644
--- a/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go
+++ b/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go
@@ -77,6 +77,7 @@ func (in *KubeadmControlPlane) ValidateUpdate(old runtime.Object) error {
 		{spec, kubeadmConfigSpec, clusterConfiguration, "etcd", "local", "imageTag"},
 		{spec, "infrastructureTemplate", "name"},
 		{spec, "replicas"},
+		{spec, "version"},
 	}
 
 	allErrs := in.validateCommon()