Kubernetes v1.16.15 and v1.17.12 are now available for Rancher versions v2.4.4+
Kubernetes v1.18.9 is now available for Rancher versions v2.4.5+
Kubernetes v1.15.12 is now available for Rancher versions v2.4.6+
Note: If you are an air gapped user, please review the documentation on how to get these versions .