periodic.gemspec in periodic-1.2.3 vs periodic.gemspec in periodic-1.2.4

@@ -23,10 +23,11 @@
   if spec.respond_to?(:metadata)
     spec.metadata["allowed_push_host"] = "https://rubygems.org"
   end
 
   spec.add_development_dependency "bundler", "~> 1.8"
-  spec.add_development_dependency "test-unit", "~> 2.5"
+  spec.add_development_dependency "test-unit", "~> 3.1"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "coveralls", "~> 0"
   spec.add_development_dependency "rubocop", "~> 0"
+  spec.add_development_dependency "shoulda-context", "~> 1.2"
 end