diff --git a/Gemfile b/Gemfile
index f5c3cb5..a3f70b9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,6 @@
 source "http://rubygems.org"
 
+gem 'nokogiri'
+
 # Specify your gem's dependencies in comicbox.gemspec
 gemspec