Not compatible with Rails 5.1.0.rc1

[jonhue]

Bundler could not find compatible versions for gem "railties":
  In Gemfile:
jquery-rails (>= 4.2.2, ~> 4.2) x86-mingw32 was resolved to 4.2.2, which
depends on
      railties (>= 4.2.0) x86-mingw32

    rails (~> 5.1.0.rc1) x86-mingw32 was resolved to 5.1.0.rc1, which depends on
      railties (= 5.1.0.rc1) x86-mingw32

Output after running bundle update

[rafaelfranca]

The gem supports any Rails version bigger or equal to 4.2 https://github.com/rails/jquery-rails/blob/v4.2.2/jquery-rails.gemspec#L18. I think you found a bug in either bundler or rubygems. Could you report to them?