jettywrapper.gemspec in jettywrapper-2.0.3 vs jettywrapper.gemspec in jettywrapper-2.0.4

@@ -21,14 +21,15 @@
 
   s.add_dependency "logger"
   s.add_dependency "childprocess"
   s.add_dependency "i18n"
   s.add_dependency "activesupport", ">=3.0.0"
-  s.add_dependency 'rubyzip'
+  s.add_dependency 'rubyzip', "~> 1.0"
 
   s.add_development_dependency "rspec", '~> 3.2'
   s.add_development_dependency "rspec-its"
   s.add_development_dependency 'rake'
+  s.add_development_dependency 'simplecov'
 
   s.add_development_dependency 'yard'
 end