Invalid gemspec because of the date format in specification

Question

When I include a gem that I made, thanks to Bundler (version 1.0.12), in a Gemfile and then I try to bundle or to rake just like that:

$ rake

I\

Answer 1

This is more of a comment to ben hall's answer, but i dont have that privilege yet it seems

gem updates didn't seem to work, im thinking it can't even load the gem because of the bad date format. manually changing the dates was too frustrating to go one by one, so a grep:

grep -i *.gemspec -e '.*s\.date.*=.*%q{\(....-..-..\) \(.*Z\)}

And for sed:

sed -i -e 's/\(.*\)s\.date.*=.*%q{\(....-..-..\) \(.*Z\)}/\1s.date = %q\{\2}/p' ./*.gemspec

And at your own risks!! I'm still a sed newbie, but it worked for me ;)