Perpetual SK2020 upgrade to SK2021, OK?

We have Sketchup Pro 2020 perpetual. Are we allowed to upgrade to a perpetual Pro SK2021. Or, do we have to get a prescription if we want Pro 2021?

I see one license for your company, and the 2021 version is already in use by someone with the initials JG. It is a permanent license, so no need to do anything, unless you want to have continued support and future versions. If you do, take the migration offer. Your 2021 license will still work in a couple of years time, if you decide you don’t like subscriptions.