diff --git a/Rakefile b/Rakefile
index abdf82d..2d5ac17 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,5 +1,5 @@
 require 'rspec/core/rake_task'
-require 'hanna/rdoctask'
+require 'rdoc/task'
 
 spec = Gem::Specification.load("mongoid-tree.gemspec")
 
@@ -8,6 +8,7 @@ RSpec::Core::RakeTask.new(:spec)
 task :default => :spec
 
 Rake::RDocTask.new do |rdoc|
+  rdoc.generator = 'hanna'
   rdoc.rdoc_dir = 'doc'
   rdoc.title = "#{spec.name} #{spec.version}"
   rdoc.options += spec.rdoc_options
diff --git a/mongoid-tree.gemspec b/mongoid-tree.gemspec
index a432eb8..a98edd4 100644
--- a/mongoid-tree.gemspec
+++ b/mongoid-tree.gemspec
@@ -17,5 +17,5 @@ Gem::Specification.new do |s|
   # s.add_runtime_dependency('mongoid', ['~> 2.0.0'])
   s.add_development_dependency('rspec', ['~> 2.3'])
   s.add_development_dependency('autotest', ['>= 4.3.2'])
-  s.add_development_dependency('hanna', ['>= 0.1.12'])
+  s.add_development_dependency('hanna-nouveau', ['>= 0.2.2'])
 end