Oh.
I booted my old laptop running openbsd to write a bootable flash drive to rescue my current laptop. I thought about upgrading the old laptop at the same time. It's running 6.6. Latest release is 7.5.

Only the last two releases are supported, only upgrades from one version to the next are supported and the upgrade process involves updating all the installed packages. I doubt I'll find a repo with all packages from all the way back to 6.6 :/