Hi Mario, Some recent changes [0] have pulled flask into the key package set. We are trying to shrink this set to RC bug get promptly worked on. Can you please mark python3-flask as <!nocheck> That's all I tried to rebuild with "sbuild --profile=nocheck" and everything went fine. Greetings Alexandre Pseudo one-line-patch: d/control - python3-flask, + python3-flask <!nocheck>, [0] https://salsa.debian.org/efi-team/fwupd/-/commit/fa717e00222b1d8a617ce6f217c2af7ecf088530 [1] https://release.debian.org/key-packages.html