I've got deeper into it now. I think that was pinned by mistake, but pydocstyle was mend, the corresponding changelog entry is on that. I've commented on the commit [1], waiting for a reaction ...
A simple patch for setup.py which removes the pinning would do it, because actually there are no API changes in pycodestyle >= 2.1.0. I've tested that against pycodestyle 2.2.0-2 (currently in the archive) and everything works. I'll upload this shortly to catch the AUTORM. DS [1] https://github.com/landscapeio/prospector/commit/95e09816534853616d42877dcb8b9dc0f71a38e8 -- 4096R/DF5182C8 Debian Developer (sten...@debian.org) http://www.danielstender.com/