Gemfile in sidekiq-3.2.6 vs Gemfile in sidekiq-3.3.0

@@ -10,9 +10,13 @@
 
 platforms :ruby do
   gem 'sqlite3'
 end
 
+platforms :mri_21 do
+  gem 'pry-byebug'
+end
+
 platforms :jruby do
   gem 'jruby-openssl'
   gem 'activerecord-jdbcsqlite3-adapter'
 end