diff --git a/Gemfile b/Gemfile
index 1ed7462c..22fb32c1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -33,7 +33,7 @@ gem 'loofah', '2.5.0' # Rails 5.2
 gem 'sprockets', '3.7.2' # 4.0 requires ruby 2.5
 gem 'i18n', '1.8.2'
 gem 'json', '2.3.0'
-gem 'rack', '2.2.2'
+gem 'rack', '2.2.6.2'
 gem 'rack-test', '1.1.0'
 gem 'rake', '13.0.1'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index dc3638fd..f3bbfe2c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -342,7 +342,7 @@ GEM
       nio4r (~> 2.0)
     rabl (0.14.3)
       activesupport (>= 2.3.14)
-    rack (2.2.2)
+    rack (2.2.6.2)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
     rack-test (1.1.0)
@@ -541,7 +541,7 @@ DEPENDENCIES
   pry
   puma (~> 4.3.1)
   rabl
-  rack (= 2.2.2)
+  rack (= 2.2.6.2)
   rack-cors
   rack-test (= 1.1.0)
   rails (~> 6.0, >= 6.0.3.1)