diff --git a/Gemfile b/Gemfile
index a0d0e775c..d85ddf65f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -36,7 +36,7 @@ group :docs do
     gem 'nanoc-toolbox'
     gem 'compass'
     gem 'bootstrap-sass'
-    gem 'nokogiri'
+    gem 'nokogiri', '>= 1.16.5'
     gem 'rubypants'
     gem 'rouge'
     gem 'redcarpet'