buff-ignore.gemspec in buff-ignore-1.1.1 vs buff-ignore.gemspec in buff-ignore-1.2.0

@@ -15,9 +15,10 @@
 
   spec.files         = `git ls-files`.split($/)
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ['lib']
+  spec.required_ruby_version = '>= 2.1'
 
   spec.add_development_dependency 'bundler',   '~> 1.3'
   spec.add_development_dependency 'cane',      '~> 2.6'
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'rspec',     '~> 2.13'