Rakefile in dragonfly-0.9.1 vs Rakefile in dragonfly-0.9.2

@@ -17,10 +17,9 @@
   gem.description = %Q{Dragonfly is a framework that enables on-the-fly processing for any content type.
   It is especially suited to image handling. Its uses range from image thumbnails to standard attachments to on-demand text generation.}
   gem.homepage = "http://github.com/markevans/dragonfly"
   gem.license = "MIT"
   gem.authors = ["Mark Evans"]
-  gem.add_runtime_dependency('rack')
 end
 Jeweler::RubygemsDotOrgTasks.new
 
 require 'rspec/core'
 require 'rspec/core/rake_task'