diff --git a/Gemfile b/Gemfile
index 611eb2c..859f9c3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,5 +3,5 @@ gem 'github-pages', group: :jekyll_plugins
 #gem 'jekyll-admin', group: :jekyll_plugins
 gem 'wdm', '~> 0.1.1' if Gem.win_platform?
 gem 'nokogiri'
-gem 'rack', '~> 2.1.4'
+gem 'rack', '~> 2.2.6'
 gem 'rspec'
diff --git a/Gemfile.lock b/Gemfile.lock
index 2ee0c28..5d46797 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -227,7 +227,7 @@ GEM
       forwardable-extended (~> 2.6)
     public_suffix (4.0.6)
     racc (1.5.2)
-    rack (2.1.4)
+    rack (2.2.6.4)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -280,7 +280,7 @@ PLATFORMS
 DEPENDENCIES
   github-pages
   nokogiri
-  rack (~> 2.1.4)
+  rack (~> 2.2.6)
   rspec
 
 BUNDLED WITH