Gemfile in gb_dispatch-0.0.4 vs Gemfile in gb_dispatch-0.0.5

@@ -1,9 +1,10 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in gb_dispatch.gemspec
 gemspec
 
+gem 'concurrent-ruby-ext'
 
 group :test do
   gem 'rspec'
   gem 'simplecov', :require => false
 end