diff --git a/gimli.gemspec b/gimli.gemspec
index 5d9337c..3c340c3 100644
--- a/gimli.gemspec
+++ b/gimli.gemspec
@@ -29,7 +29,7 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency 'rake'
   s.add_development_dependency 'rspec'
-  s.add_development_dependency 'rr'
+  s.add_development_dependency 'rr', '~> 1.1.2'
   s.add_development_dependency 'bundler'
 
   s.files = Dir.glob("{bin,ext,lib,spec,config}/**/*") + ['LICENSE', 'README.md', 'CHANGELOG.md']
diff --git a/lib/gimli/converter.rb b/lib/gimli/converter.rb
index 7d759f9..e2e9d92 100644
--- a/lib/gimli/converter.rb
+++ b/lib/gimli/converter.rb
@@ -130,8 +130,8 @@ def generate_cover!
       cover_file = MarkupFile.new @config.cover
       markup = Markup::Renderer.new cover_file
       html = "<div class=\"cover\">\n#{markup.render}\n</div>"
-      append_stylesheets(html)
       html = add_head(html)
+      append_stylesheets(html)
       @coverfile.write(html)
       @coverfile.close
     end