nsa.gemspec in nsa-0.1.4 vs nsa.gemspec in nsa-0.2.0

@@ -17,9 +17,10 @@
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
   spec.add_dependency "activesupport", "~> 4.2.0"
+  spec.add_dependency "concurrent-ruby", "~> 1.0.0"
   spec.add_dependency "sidekiq", ">= 3.5.0"
   spec.add_dependency "statsd-ruby", "~> 1.2.0"
 
   spec.add_development_dependency "bundler", "~> 1.10"
   spec.add_development_dependency "rake", "~> 10.0"