Problem with Upgrade from 6.0.6 to mor recent version

I have inherited a pydio installation which has pydio 6.0.6 installed. When I found (and pressed) the upgrade button, I got the following error message:

file_get_contents(): Peer certificate CN=*.pydio.com' did not match expected CN=pyd.io

Any suggestions?

hi, pyd.io update server is no longer available, please change to https://update.pydio.com/pub/

Yes, but what do I need to change on this existing install to change servers?

Hi,
Please change in Pydio >> Settings >> Feature plugins >> Action plugin >> updater

Thank you. That appears to have done the trick.