Hi,

I'm testing upgrades from daedalus to excalibur and ran into a small
issue with the backports repository.

Running `apt modernize-sources` prints this warning:

---8<---

Modernizing /etc/apt/sources.list.d/devuan-backports.list...

# Would write to: /etc/apt/sources.list.d/devuan-backports.sources
Types: deb deb-src
URIs: http://deb.devuan.org/merged/
Suites: excalibur-backports
Components: main
Signed-By:
Warning: Could not determine Signed-By for URIs:
http://deb.devuan.org/merged/, Suites: excalibur-backports

---8<---

Is there any extra configuration required here?

Tom