diff --git a/Gemfile b/Gemfile
index a374377..a32af20 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'pry', '~> 0.12.2'
 gem 'puma', '~> 3.11'
 gem 'rack', '~> 2.0.7'
 gem 'rack-attack', '~> 6.0.0'
-gem 'rack-cors', '~> 1.0.3', require: 'rack/cors'
+gem 'rack-cors', '~> 1.0.5', require: 'rack/cors'
 gem 'rails', '~> 5.2.3'
 
 group :development, :test do
diff --git a/Gemfile.lock b/Gemfile.lock
index 76e4fbc..967c71b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -286,7 +286,8 @@ GEM
     rack (2.0.7)
     rack-attack (6.0.0)
       rack (>= 1.0, < 3)
-    rack-cors (1.0.3)
+    rack-cors (1.0.5)
+      rack (>= 1.6.0)
     rack-protection (2.0.5)
       rack
     rack-test (1.1.0)
@@ -500,7 +501,7 @@ DEPENDENCIES
   puma (~> 3.11)
   rack (~> 2.0.7)
   rack-attack (~> 6.0.0)
-  rack-cors (~> 1.0.3)
+  rack-cors (~> 1.0.5)
   rails (~> 5.2.3)
   rails-controller-testing (~> 1.0.4)
   rails_event_store (~> 0.38.1)