diff --git a/Gemfile b/Gemfile
index f7a8b5a8..5299f25c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'rails', '~> 6.0.3.2'
 gem 'rubyzip', '~> 1.3.0'
 gem 'loofah', '~> 2.3.1'
 gem 'rails-html-sanitizer'
-gem 'rack', '~> 2.0.8'
+gem 'rack', '~> 2.1.4'
 gem 'ffi', '>= 1.9.24'
 gem "nokogiri", "~> 1.11.0.rc2"
 gem "actionview", "~> 6.0.3.2"
diff --git a/Gemfile.lock b/Gemfile.lock
index b38f1c7c..97a3e5f3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -212,7 +212,7 @@ GEM
       railties (>= 3.0.0)
     raabro (1.1.6)
     racc (1.5.0)
-    rack (2.0.9)
+    rack (2.1.4)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (6.0.3.2)
@@ -371,7 +371,7 @@ DEPENDENCIES
   prawn
   prawn-table
   prawn_rails
-  rack (~> 2.0.8)
+  rack (~> 2.1.4)
   rails (~> 6.0.3.2)
   rails-erd
   rails-html-sanitizer