diff --git a/Gemfile b/Gemfile
index ee76eb8..39567ec 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,6 +10,6 @@ group :development, :test do
   gem 'redcarpet', '~> 3.5.1'
   gem 'kramdown', '~> 2.3.1'
   gem 'kramdown-parser-gfm', '~> 1.1.0'
-  gem 'nokogiri', '~> 1.12.5'
+  gem 'nokogiri', '~> 1.13.4'
   gem "jekyll-last-modified-at", "~> 1.0"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index c3072ca..9090101 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -47,15 +47,15 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
+    mini_portile2 (2.8.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     posix-spawn (0.3.15)
     public_suffix (4.0.6)
-    racc (1.5.2)
+    racc (1.6.0)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -79,7 +79,7 @@ DEPENDENCIES
   jekyll-sitemap (~> 1.2.0)
   kramdown (~> 2.3.1)
   kramdown-parser-gfm (~> 1.1.0)
-  nokogiri (~> 1.12.5)
+  nokogiri (~> 1.13.4)
   redcarpet (~> 3.5.1)
 
 BUNDLED WITH