fog-aws: Doesn't work after upgrading to 0.1.2

I’m getting error:

rake aborted!
NameError: uninitialized constant Fog::Service
ruby/2.2.0/gems/fog-aws-0.1.2/lib/fog/aws/storage.rb:3:in `<module:Storage>'
ruby/2.2.0/gems/fog-aws-0.1.2/lib/fog/aws/storage.rb:2:in `<module:Fog>'
ruby/2.2.0/gems/fog-aws-0.1.2/lib/fog/aws/storage.rb:1:in `<top (required)>'
/usr/local/rvm/gems/ruby-2.2.0@global/gems/bundler-1.7.9/lib/bundler/runtime.rb:76:in `require'
/usr/local/rvm/gems/ruby-2.2.0@global/gems/bundler-1.7.9/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
/usr/local/rvm/gems/ruby-2.2.0@global/gems/bundler-1.7.9/lib/bundler/runtime.rb:72:in `each'
/usr/local/rvm/gems/ruby-2.2.0@global/gems/bundler-1.7.9/lib/bundler/runtime.rb:72:in `block in require'
/usr/local/rvm/gems/ruby-2.2.0@global/gems/bundler-1.7.9/lib/bundler/runtime.rb:61:in `each'
/usr/local/rvm/gems/ruby-2.2.0@global/gems/bundler-1.7.9/lib/bundler/runtime.rb:61:in `require'
/usr/local/rvm/gems/ruby-2.2.0@global/gems/bundler-1.7.9/lib/bundler.rb:134:in `require'
releases/20150408132737/config/application.rb:7:in `<top (required)>'
releases/20150408132737/Rakefile:4:in `require'
releases/20150408132737/Rakefile:4:in `<top (required)>'
(See full trace by running task with --trace)
---- End output of bash -c 'source /etc/profile.d/rvm.sh && bundle exec rake assets:precompile' ----

I’m using https://github.com/rumblelabs/asset_sync gem - not sure if this issue should be addressed there or here.