diff --git a/Gemfile b/Gemfile
index aeb6d73ee7..e1e3cc8f56 100644
--- a/Gemfile
+++ b/Gemfile
@@ -73,7 +73,7 @@ gem 'parallel', '~> 1.20'
 gem 'posix-spawn'
 gem 'pundit', '~> 2.1'
 gem 'premailer-rails'
-gem 'rack-attack', '~> 6.3'
+gem 'rack-attack', '~> 6.4'
 gem 'rack-cors', '~> 1.1', require: 'rack/cors'
 gem 'rails-i18n', '~> 5.1'
 gem 'rails-settings-cached', '~> 0.6'
diff --git a/Gemfile.lock b/Gemfile.lock
index b400c4c80c..9c5706fa0e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -436,7 +436,7 @@ GEM
     raabro (1.3.3)
     racc (1.5.2)
     rack (2.2.3)
-    rack-attack (6.3.1)
+    rack-attack (6.4.0)
       rack (>= 1.0, < 3)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
@@ -772,7 +772,7 @@ DEPENDENCIES
   puma (~> 5.1)
   pundit (~> 2.1)
   rack (~> 2.2.3)
-  rack-attack (~> 6.3)
+  rack-attack (~> 6.4)
   rack-cors (~> 1.1)
   rails (~> 5.2.4.4)
   rails-controller-testing (~> 1.0)