title: Use older version of Rake
body: <p>I have Rake version 0.9.1 but I need to use 0.8.7 for a project, and I'm fairly certain I have both version installed but it always uses 0.9.1 by default. Is there a way to specify which version of Rake to use?</p>
  
  <p>I'm trying to run this: rake db:drop db:create db:migrate db:seed
  and I get this error:
  You have already activated rake 0.9.1, but your Gemfile requires rake 0.8.7. Consider using bundle exec.</p>