diff --git a/Gemfile b/Gemfile
index fe095fbc..3485d025 100644
--- a/Gemfile
+++ b/Gemfile
@@ -19,7 +19,7 @@ group :jekyll_plugins do
 end
 
 gem 'sinatra', '2.0.8.1'
-gem 'nokogiri', '1.10.8'
+gem 'nokogiri', '1.13.4'
 
 # Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem
 # and associated library
diff --git a/Gemfile.lock b/Gemfile.lock
index 1391e099..d263cddc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,17 +69,19 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     multi_json (1.14.1)
     mustermann (1.1.0)
       ruby2_keywords (~> 0.0.1)
-    nokogiri (1.10.8)
-      mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.8-x64-mingw32)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    nokogiri (1.13.4-x64-mingw32)
+      racc (~> 1.4)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.1)
+    racc (1.6.0)
     rack (2.2.3)
     rack-protection (2.0.8.1)
       rack
@@ -127,7 +129,7 @@ DEPENDENCIES
   jekyll-redirect-from (= 0.15.0)
   jekyll-sitemap (= 1.4.0)
   jekyll-time-to-read (= 0.1.2)
-  nokogiri (= 1.10.8)
+  nokogiri (= 1.13.4)
   rake (= 13.0.1)
   sass-globbing (= 1.1.5)
   sinatra (= 2.0.8.1)