diff --git a/docs/Gemfile b/docs/Gemfile
index 75d9835..814ed61 100644
--- a/docs/Gemfile
+++ b/docs/Gemfile
@@ -1,2 +1,3 @@
 source "https://rubygems.org"
 gem "github-pages", group: :jekyll_plugins
+gem "webrick", "~> 1.7"
diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index bd677f3..377c277 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -211,6 +211,8 @@ GEM
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     minitest (5.16.3)
+    nokogiri (1.13.8-arm64-darwin)
+      racc (~> 1.4)
     nokogiri (1.13.8-x86_64-darwin)
       racc (~> 1.4)
     octokit (4.25.1)
@@ -249,13 +251,16 @@ GEM
       unf_ext
     unf_ext (0.0.8.2)
     unicode-display_width (1.8.0)
+    webrick (1.8.1)
     zeitwerk (2.6.1)
 
 PLATFORMS
+  arm64-darwin-22
   x86_64-darwin-18
 
 DEPENDENCIES
   github-pages
+  webrick (~> 1.7)
 
 BUNDLED WITH
    2.3.23