garoon-cat.gemspec in garoon-cat-0.1.0 vs garoon-cat.gemspec in garoon-cat-0.2.0

@@ -19,12 +19,14 @@
   end
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
+  spec.required_ruby_version = '>= 2.3'
+
   spec.add_dependency 'httpclient'
   spec.add_dependency 'http-cookie'
-  spec.add_dependency 'activesupport'
+  spec.add_dependency 'activesupport', '~> 4.2'
   spec.add_dependency 'xml-simple'
   spec.add_development_dependency 'bundler', '~> 1.13'
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'minitest', '~> 5.0'
   spec.add_development_dependency 'minitest-assert_errors'