diff --git a/Gemfile b/Gemfile
index d708c7a..26c7814 100644
--- a/Gemfile
+++ b/Gemfile
@@ -79,6 +79,9 @@ gem "sidekiq", "~> 7.0"
 # Use PostgreSQL as the database for Active Record
 gem "pg"
 
+# Rainbow for colored output in irb, even in production
+gem "rainbow"
+
 # Test dependencies
 group :test do
   gem "rspec-rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index b6dcb12..2768743 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -416,6 +416,7 @@ DEPENDENCIES
   puma (~> 5.5.0)
   rails (~> 6.1)
   rails-controller-testing (~> 1.0)
+  rainbow
   rspec-rails
   rubocop (~> 1.30)
   rubocop-rails (~> 2.14)