Of course, I'm presuming that's what happened in the first place. If I've misinterpreted, please do say.
If you were running Ubuntu 16.04 and added the Trisquel repositories, this is
entirely expected. As an unofficial version of Ubuntu, with an explicit goal
to avoid endorsing the differing values of that project, Trisquel is both
legally and morally required to remove references to the OS from *all
packages*- which means that, when you 'update'- replace packages with their
most current Trisquel equivalents- every reference to Ubuntu is replaced.
- [Trisquel-users] Trisquel has replaced the Ubuntu name since ... Joe Murphy
- Re: [Trisquel-users] Trisquel has replaced the Ubuntu na... gpast_panama
- Re: [Trisquel-users] Trisquel has replaced the Ubuntu na... mappack
