Correct the version number in META.yml (https://rt.cpan.org/Ticket/Display.html?id=59459)
Do this by using MakeMaker to auto-generate META.yml, to prevent similar problems in future. This is possible because the new MakeMaker parameter MIN_PERL_VERSION was added in MakeMaker 6.47_01; the fact that this didn’t used to exist is the reason we managed META.yml by hand till now.