diff --git a/Gemfile b/Gemfile
index d2c4fa8..4e1ed40 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,7 +24,7 @@ source 'https://rubygems.org'
 gemspec
 
 gem 'minitest', '5.24.1', require: false
-gem 'rack', '3.0.11', require: false
+gem 'rack', '3.1.6', require: false
 gem 'rake', '13.2.1', require: false
 gem 'rspec-rails', '6.1.3', require: false
 gem 'rubocop', '1.64.1', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index bbeb632..01586eb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,7 +75,7 @@ GEM
     psych (5.1.2)
       stringio
     racc (1.8.0)
-    rack (3.0.11)
+    rack (3.1.6)
     rack-session (2.0.0)
       rack (>= 3.0.0)
     rack-test (2.1.0)
@@ -169,7 +169,7 @@ PLATFORMS
 DEPENDENCIES
   minitest (= 5.24.1)
   pgtk!
-  rack (= 3.0.11)
+  rack (= 3.1.6)
   rake (= 13.2.1)
   rspec-rails (= 6.1.3)
   rubocop (= 1.64.1)