jekyll-toc.gemspec in jekyll-toc-0.9.1 vs jekyll-toc.gemspec in jekyll-toc-0.10.0

@@ -15,10 +15,10 @@
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ['lib']
 
   spec.required_ruby_version = '>= 2.3'
 
-  spec.add_runtime_dependency 'nokogiri', '~> 1.8'
+  spec.add_runtime_dependency 'nokogiri', '~> 1.9'
 
   spec.add_development_dependency 'appraisal'
   spec.add_development_dependency 'jekyll', '>= 3.5'
   spec.add_development_dependency 'minitest', '~> 5.0'
   spec.add_development_dependency 'pry'