diff --git a/Gemfile b/Gemfile
index b86b637..73bc103 100644
--- a/Gemfile
+++ b/Gemfile
@@ -33,6 +33,6 @@ gem "middleman-favicon-maker", "~> 4.0"
 
 gem "middleman-blog", "~> 4.0"
 gem "builder", "~> 3.0"
-gem "nokogiri", "~> 1.13.4"
+gem "nokogiri", "~> 1.13.9"
 
 gem "less"
diff --git a/Gemfile.lock b/Gemfile.lock
index 8f81cb5..3ae437f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -106,7 +106,7 @@ GEM
       rouge (~> 2.0)
     mini_portile2 (2.8.0)
     minitest (5.11.1)
-    nokogiri (1.13.4)
+    nokogiri (1.13.9)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     padrino-helpers (0.13.3.4)
@@ -158,7 +158,7 @@ DEPENDENCIES
   middleman-livereload
   middleman-minify-html
   middleman-syntax
-  nokogiri (~> 1.13.4)
+  nokogiri (~> 1.13.9)
   redcarpet (~> 3.5)
   scss_lint
   therubyracer