diff --git a/docs/Gemfile b/docs/Gemfile
index 42261e2..88b3718 100644
--- a/docs/Gemfile
+++ b/docs/Gemfile
@@ -5,7 +5,7 @@ source "https://rubygems.org"
 # gem "rails"
 gem 'wdm', '>= 0.1.0' if Gem.win_platform?
 gem "github-pages", group: :jekyll_plugins
-gem "webrick", "~> 1.8"
+gem "webrick", "~> 1.8", ">= 1.8.2"
 gem "jekyll-avatar"
 gem "jekyll-sitemap"
 gem "jekyll-optional-front-matter", "~> 0.3.2"