diff --git a/common/support/ruby/Gemfile b/common/support/ruby/Gemfile
index 986fc5a..bea33fa 100644
--- a/common/support/ruby/Gemfile
+++ b/common/support/ruby/Gemfile
@@ -3,7 +3,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 ruby '~> 2.6.4'
 
-gem 'rack', '= 2.0.8'
+gem 'rack', '2.1.4'
 gem 'rack-ssl', '= 1.4.1'
 gem 'rack_csrf', '= 2.6.0'
 gem 'rack-contrib', '= 2.1.0'
diff --git a/common/support/ruby/Gemfile.lock b/common/support/ruby/Gemfile.lock
index 2df65bb..e98a227 100644
--- a/common/support/ruby/Gemfile.lock
+++ b/common/support/ruby/Gemfile.lock
@@ -244,7 +244,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.3)
-    rack (2.0.8)
+    rack (2.1.4)
     rack-contrib (2.1.0)
       rack (~> 2.0)
     rack-protection (2.0.7)
@@ -402,7 +402,7 @@ DEPENDENCIES
   jbuilder (= 2.9.1)
   listen (= 3.1.5)
   pry (= 0.12.2)
-  rack (= 2.0.8)
+  rack (= 2.1.4)
   rack-contrib (= 2.1.0)
   rack-ssl (= 1.4.1)
   rack_csrf (= 2.6.0)