gem - Trouble upgrading Ruby on Rails from version 3.2.13 to 4.0.0 -

for application trying upgrade ruby on rails version 3.2.13 4.0.0 , in trouble when installing / updating gem (by using bundler), globalize3 gem. running ruby 2.0.0-p247.

given gemfile is:

gem 'rails', '4.0.0'  gem 'globalize3', github: 'svenfuchs/globalize3', branch: 'rails4'  gem 'delayed_job', :git => 'git://github.com/collectiveidea/delayed_job.git', :branch => 'master' gem 'delayed_job_active_record', :git => 'git://github.com/collectiveidea/delayed_job_active_record.git', :branch => 'master'  # added these gems transition rails4: gem 'protected_attributes' gem 'rails-observers' gem 'actionpack-page_caching' gem 'actionpack-action_caching' gem 'activerecord-deprecated_finders' 

when run bundle install command in terminal window

then following output:

updating git://github.com/svenfuchs/globalize3.git fetching gem metadata https://rubygems.org/....... fetching gem metadata https://rubygems.org/.. resolving dependencies... bundler not find compatible versions gem "activerecord":   in gemfile:     globalize3 (>= 0) ruby depends on       activerecord (~> 3.0) ruby      delayed_job_active_record (>= 0) ruby depends on       activerecord (4.0.0)  bundler not find compatible versions gem "rails":   in gemfile:     globalize3 (>= 0) ruby depends on       rails (~> 3) ruby      rails (4.0.0) 

when run bundle update command in terminal window

then following output:

updating git://github.com/collectiveidea/delayed_job.git updating git://github.com/collectiveidea/delayed_job_active_record.git updating git://github.com/svenfuchs/globalize3.git fetching gem metadata https://rubygems.org/....... fetching gem metadata https://rubygems.org/.. resolving dependencies... bundler not find compatible versions gem "rails":   in gemfile:     globalize3 (>= 0) ruby depends on       rails (~> 3) ruby      rails (4.0.0)  bundler not find compatible versions gem "railties":   in gemfile:     globalize3 (>= 0) ruby depends on       railties (~> 3.0) ruby      coffee-rails (~> 4.0.0) ruby depends on       railties (4.0.0)  bundler not find compatible versions gem "actionpack":   in gemfile:     rails (= 4.0.0) ruby depends on       actionpack (= 4.0.0) ruby      actionpack-action_caching (>= 0) ruby depends on       actionpack (4.0.0.rc2) 

how can solve problem? globalize3 gem compatible ruby on rails 4? advisable wait upgrading ruby on rails 4?

note: seen #415 upgrading rails 4 railscast , made many searches on internet (the reasonable discussion "globalize3 not work rails4") problem, still in trouble.

the globalize3 gem has been renamed globalize , major version numbers correspond corresponding version of activerecord (3.x ar3 , 4.x ar4).

so need put in gemfile, , should not conflict:

gem 'globalize', '~> 4.0.0.alpha.2' 

see github repository more details.