How to upgrade kubernetes version on cluster custom node

Hi folks,
I’ve just upgrade my Rancher version up to 2.2.8.
It was my intent to upgrade alse the kubernetes version on cluster nodes from 1.13.4 to 1.14.6.
How can I do that safely.

Thanks for your contribution

You can find that in the docs here: https://rancher.com/docs/rancher/v2.x/en/cluster-admin/editing-clusters/#upgrading-kubernetes

Let me know if that doesn’t help.