diff --git a/docs/api/Gemfile b/docs/api/Gemfile
index 7604fd4..6611334 100644
--- a/docs/api/Gemfile
+++ b/docs/api/Gemfile
@@ -8,6 +8,6 @@ gem 'middleman-autoprefixer', '~> 3.0'
 gem 'middleman-sprockets', '~> 4.1'
 gem 'rouge', '~> 3.21'
 gem 'redcarpet', '~> 3.5.0'
-gem 'nokogiri', '~> 1.13.3'
+gem 'nokogiri', '~> 1.16.0'
 gem 'sass'
 gem 'webrick'