The option `options' defined in `<unknown-file>' has been renamed to `opts'

Greetings,

Yesterday, I moved from NixOS 23.11 to unstable. While I managed to do so after porting a few things, I’m left with a cryptic warning that I try to fix:

The option `options' defined in `<unknown-file>' has been renamed to `opts'.

I git grep-ed my configuration and didn’t find anything. What are the best approaches to deal with this?

Thanks for your time.