Incompatible with Rails 4.2

[aripollak]

Trying to update to Rails 4.2 while using w3c_validators results in this error:

Bundler could not find compatible versions for gem "nokogiri":
  In Gemfile:
    rails (~> 4.2.0) ruby depends on
      actionpack (= 4.2.0) ruby depends on
        rails-dom-testing (>= 1.0.5, ~> 1.0) ruby depends on
          nokogiri (~> 1.6.0) ruby

    w3c_validators (= 1.2) ruby depends on
      nokogiri (1.5.11)

[aripollak]

Nevermind, I'm not sure how I got into that state.