diff --git a/Gemfile b/Gemfile
index e2ad97c..6dd5a6f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -26,6 +26,7 @@ gem 'bootsnap', '>= 1.1.0', require: false
 
 # Use Rack CORS for handling Cross-Origin Resource Sharing (CORS), making cross-origin AJAX possible
 # gem 'rack-cors'
+gem 'rack-cors', :require => 'rack/cors'
 
 group :production do
   gem 'pg'
diff --git a/Gemfile.lock b/Gemfile.lock
index 4a0d376..13df4ae 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -78,6 +78,7 @@ GEM
     pg (1.1.3)
     puma (3.12.0)
     rack (2.0.5)
+    rack-cors (1.0.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.1)
@@ -139,6 +140,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   pg
   puma (~> 3.11)
+  rack-cors
   rails (~> 5.2.1)
   spring
   spring-watcher-listen (~> 2.0.0)