diff --git a/Rakefile b/Rakefile
index 9f1dd36e..46b1503e 100644
--- a/Rakefile
+++ b/Rakefile
@@ -9,7 +9,6 @@ task :benchmark do
 end
 
 task :gendoc do
-  #puts 'yard doc generation disabled until JRuby build native extensions for redcarpet or yard removes the dependency.'
   system "yardoc"
   system "yard stats --list-undoc"
 end
diff --git a/axlsx.gemspec b/axlsx.gemspec
index 0b4ebf78..efc3edfe 100644
--- a/axlsx.gemspec
+++ b/axlsx.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.files = Dir.glob("{lib/**/*,examples/**/*.rb,examples/**/*.jpeg}") + %w{ LICENSE README.md Rakefile CHANGELOG.md .yardopts .yardopts_guide }
   s.test_files  = Dir.glob("{test/**/*}")
 
-  s.add_runtime_dependency 'nokogiri', '>= 1.7.1'
+  s.add_runtime_dependency 'nokogiri', '>= 1.8.2'
   s.add_runtime_dependency 'rubyzip','~> 1.2', '>= 1.2.1'
   s.add_runtime_dependency "htmlentities", "~> 4.3.4"
   s.add_runtime_dependency "mimemagic", "~> 0.3"