subs.gemspec in subs-1.0.0 vs subs.gemspec in subs-1.0.1

@@ -22,11 +22,12 @@
 
   spec.bindir        = 'bin'
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
+  spec.required_ruby_version = '>= 2.0.0'
+
   spec.add_runtime_dependency 'xmlrpc',  '~> 0.3'
   spec.add_runtime_dependency 'thor',    '~> 0.20'
 
   spec.add_development_dependency 'bundler',  '~> 2.0'
-  spec.add_development_dependency 'rake',     '~> 10.0'
 end