diff --git a/Gemfile b/Gemfile
index fa75df1..e87d96b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,8 @@
 source 'https://rubygems.org'
 
 gemspec
+
+group :benchmarking do
+  gem 'ox', :platforms => [:mri, :rbx]
+  gem 'nokogiri'
+end