diff --git a/Gemfile b/Gemfile
index 620e29f3b..794576daa 100644
--- a/Gemfile
+++ b/Gemfile
@@ -17,7 +17,7 @@ source 'https://rubygems.org'
 gem 'github-pages'
 gem 'redcarpet'
 gem 'jekyll-twitter-plugin'
-gem 'nokogiri', '1.15.4'
+gem 'nokogiri', '1.18.9'
 gem 'mini_portile2', '2.8.4'
 
 gem "webrick", "~> 1.8" # By upgrading ruby to 3.x
diff --git a/Gemfile.lock b/Gemfile.lock
index 74c9d7752..7d38bb115 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -212,16 +212,20 @@ GEM
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     minitest (5.20.0)
-    nokogiri (1.15.4)
+    nokogiri (1.18.9)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
+    nokogiri (1.18.9-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.18.9-x86_64-linux-gnu)
+      racc (~> 1.4)
     octokit (4.25.1)
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.7)
-    racc (1.7.1)
+    racc (1.8.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -262,7 +266,7 @@ DEPENDENCIES
   github-pages
   jekyll-twitter-plugin
   mini_portile2 (= 2.8.4)
-  nokogiri (= 1.15.4)
+  nokogiri (= 1.18.9)
   redcarpet
   webrick (~> 1.8)