diff --git a/Gemfile b/Gemfile
index 83f8e54..ab7fced 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,10 +2,10 @@ source "http://rubygems.org"
 
 gemspec
 
-gem 'oj'
 gem 'plist'
 
 platforms :ruby do
+  gem 'oj'
   gem 'libxml-ruby'
 end