How correct update version gem mailcatcher in ruby on rails? -

1. i installed gem mailcatcher v. 0.5.12,

2.run bundle exec mailcatcher.

but no want update version 0.6.

i next:

1. gem uninstall mailcatcher v. 0.5.12

2. gem install mailcatcher 0.6...

i run command bundle show , display error: could not find mailcatcher-0.5.12 in of sources

how me correct remove version 0.5.12?

you need specify required compatible version of mailcatcher in gemfile

gem 'mailcatcher', '~> x.x.x' 

then run

bundle update mailcatcher