Gemfile in resque-rollbar-0.0.4 vs Gemfile in resque-rollbar-0.0.5

@@ -1,7 +1,13 @@
 source 'https://rubygems.org'
 
 gemspec
 
+platforms :rbx do
+  gem 'racc'
+  gem 'rubysl', '~> 2.0'
+  gem 'psych'
+end
+
 platforms :jruby do
   gem 'jruby-openssl'
 end