diff --git a/old_docs/Gemfile b/old_docs/Gemfile
index 6936bd28..cabc2f92 100644
--- a/old_docs/Gemfile
+++ b/old_docs/Gemfile
@@ -3,6 +3,6 @@ gem 'github-pages', '>= 224'
 gem 'rouge'
 gem "jekyll", ">= 3.9.1"
 gem "ffi", ">= 1.9.24"
-gem "nokogiri", ">= 1.8.5"
+gem "nokogiri", ">= 1.16.8"
 gem "yajl-ruby", ">= 1.3.1"
 gem "kramdown", ">= 2.3.1"