diff --git a/Gemfile b/Gemfile
index 7f4825f..7b3bb29 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,4 +6,4 @@ source 'https://rubygems.org'
 gem "github-pages", group: :jekyll_plugins
 # Security patch
 # REF: https://security.snyk.io/vuln/SNYK-RUBY-WEBRICK-8068535
-gem 'webrick', '1.8.2'
+gem 'webrick', '1.9.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 28d1dd6..d90845d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -264,14 +264,14 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.8.0)
     uri (0.13.0)
-    webrick (1.8.2)
+    webrick (1.9.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   github-pages
-  webrick (= 1.8.2)
+  webrick (= 1.9.0)
 
 BUNDLED WITH
    2.1.4