Rakefile in ruote-dm-2.1.7 vs Rakefile in ruote-dm-2.1.9

@@ -35,9 +35,10 @@
   gem.add_dependency 'ruote', ">= #{Ruote::Dm::VERSION}"
   gem.add_dependency 'dm-core'
   #gem.add_dependency 'dm-aggregates'
   #gem.add_dependency 'dm-types'
   gem.add_development_dependency 'yard'
+  gem.add_development_dependency 'rake'
   gem.add_development_dependency 'jeweler'
 
   # gemspec spec : http://www.rubygems.org/read/chapter/20
 end
 Jeweler::GemcutterTasks.new