diff --git a/Gemfile b/Gemfile
index 7f5f3d2..2979e9f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,8 +1,9 @@
 source "https://rubygems.org"
 
-gem "jekyll", "~> 3.9.0"
+# gem "jekyll", "~> 3.9.0"
 # gem "minima", "~> 2.5.1"
 gem "github-pages", group: :jekyll_plugins
+gem "webrick"
 # gem "sprockets", "~> 3.7"
 
 group :jekyll_plugins do
diff --git a/Gemfile.lock b/Gemfile.lock
index 507b8a9..38096b2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -251,6 +251,7 @@ GEM
       unf_ext
     unf_ext (0.0.7.7)
     unicode-display_width (1.7.0)
+    webrick (1.7.0)
     zeitwerk (2.4.2)
 
 PLATFORMS
@@ -258,8 +259,8 @@ PLATFORMS
 
 DEPENDENCIES
   github-pages
-  jekyll (~> 3.9.0)
   tzinfo-data
+  webrick
 
 BUNDLED WITH
-   2.2.3
+   2.2.7