diff --git a/Gemfile b/Gemfile
index a7187d69162888..6efd8e1574fc21 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem 'puma', '~> 5.3'
 gem 'rails', '~> 6.1.3'
 gem 'sprockets', '~> 3.7.2'
 gem 'thor', '~> 1.1'
-gem 'rack', '~> 2.2.3'
+gem 'rack', '~> 2.2.6'
 
 gem 'hamlit-rails', '~> 0.2'
 gem 'pg', '~> 1.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index 201893d477fc41..017b735b79ccaf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -439,7 +439,7 @@ GEM
       activesupport (>= 3.0.0)
     raabro (1.3.3)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-attack (6.5.0)
       rack (>= 1.0, < 3)
     rack-cors (1.1.1)
@@ -760,7 +760,7 @@ DEPENDENCIES
   pry-rails (~> 0.3)
   puma (~> 5.3)
   pundit (~> 2.1)
-  rack (~> 2.2.3)
+  rack (~> 2.2.6)
   rack-attack (~> 6.5)
   rack-cors (~> 1.1)
   rails (~> 6.1.3)