Looks like the `Link check` step in the CI is broken. It has always been allowed to fail for a long time. Would be great to fix them all. Please see the output here: https://github.com/python/devguide/runs/2463428458?check_suite_focus=true ~While looking at the output, I noticed that pypy.org is listed as broken. I think that's the correct url though. I've filed the issue here:~ https://github.com/pypy/pypy.org/issues/23 Update: the url seems to work now. But it would be good to look through the rest and update the urls accordingly.