jekyll-toc.gemspec in jekyll-toc-0.5.2 vs jekyll-toc.gemspec in jekyll-toc-0.6.0

@@ -13,16 +13,16 @@
   spec.homepage      = 'https://github.com/toshimaru/jekyll-toc'
   spec.license       = 'MIT'
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = '>= 2.1.0'
+  spec.required_ruby_version = '>= 2.2.2'
 
-  spec.add_runtime_dependency 'nokogiri', '~> 1.6'
+  spec.add_runtime_dependency 'nokogiri', '~> 1.7'
 
   spec.add_development_dependency 'appraisal'
   spec.add_development_dependency 'codeclimate-test-reporter', '~> 1.0'
-  spec.add_development_dependency 'jekyll', '>= 3.1'
+  spec.add_development_dependency 'jekyll', '>= 3.5'
   spec.add_development_dependency 'minitest', '~> 5.0'
   spec.add_development_dependency 'pry'
   spec.add_development_dependency 'rake'
 end