diff --git a/Rakefile b/Rakefile
index 66a65fb249..cae9b04f4a 100644
--- a/Rakefile
+++ b/Rakefile
@@ -88,6 +88,7 @@ Rake::RDocTask.new do |rdoc|
   rdoc.rdoc_files.include('actionpack/README')
   rdoc.rdoc_files.include('actionpack/CHANGELOG')
   rdoc.rdoc_files.include('actionpack/lib/action_controller/**/*.rb')
+  rdoc.rdoc_files.include('actionpack/lib/action_dispatch/**/*.rb')
   rdoc.rdoc_files.include('actionpack/lib/action_view/**/*.rb')
   rdoc.rdoc_files.exclude('actionpack/lib/action_controller/vendor/*')