Gemfile in dynflow-0.8.8 vs Gemfile in dynflow-0.8.9

@@ -1,10 +1,10 @@
 source 'https://rubygems.org'
 
 gemspec
 
 group :concurrent_ruby_ext do
-  gem 'concurrent-ruby-ext', '~> 0.9.0.pre3'
+  gem 'concurrent-ruby-ext', '~> 1.0.0'
 end
 
 group :pry do
   gem 'pry'
 end