Can someone (and I'm looking at Petr) enlighten me why we have in requires: gem 'tire' , '>= 0.3.0', '< 0.4' Commit 4c71c2f195ab351cc175599dd69fd95ed041f29d mention, that fix some issue when installing also from rubygems.org, but that is all. Why we could not have latest 0.4.2? Mirek