dry-monads.gemspec in dry-monads-0.4.0 vs dry-monads.gemspec in dry-monads-1.0.0.beta1

@@ -25,10 +25,11 @@
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
   spec.required_ruby_version = ">= 2.2.0"
   spec.add_dependency 'dry-equalizer'
-  spec.add_dependency 'dry-core', '~> 0.3', '>= 0.3.3'
+  spec.add_dependency 'dry-core', '~> 0.4', '>= 0.4.4'
+  spec.add_dependency 'concurrent-ruby', '~> 1.0'
 
   spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'rspec'
   spec.add_development_dependency 'dry-types', '>= 0.12'