Gemfile in jbuilder-2.0.1 vs Gemfile in jbuilder-2.0.2

@@ -3,6 +3,13 @@
 gemspec
 
 gem 'rake'
 gem 'railties',   '~> 4.0.0'
 gem 'actionpack', '~> 4.0.0'
-gem 'mocha', require: false
\ No newline at end of file
+gem 'mocha', require: false
+
+platforms :rbx do
+  gem 'rubysl', '~> 2.0'
+  gem 'json', '~> 1.8'
+  gem 'rubysl-test-unit'
+  gem 'rubinius-developer_tools'
+end