ziptz.gemspec in ziptz-1.0.0 vs ziptz.gemspec in ziptz-1.0.1

@@ -16,6 +16,7 @@
   s.rdoc_options = ['--charset=UTF-8']
   s.extra_rdoc_files = ['README.md', 'LICENSE']
   s.files = Dir['[A-Z]*', '{data,lib,spec}/**/*', 'ziptz.gemspec']
   s.test_files = Dir.glob('spec/**/*_spec.rb')
   s.require_paths = ['lib']
+  s.required_ruby_version = '>= 2.0.0'
 end