diff --git a/Gemfile b/Gemfile
index bf5b233..4b9e68b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ group :development do
   gem 'minitest', '~> 5.25.0'
   gem 'minitest-around', '~> 0.5.0'
   gem 'rake', '>= 10.0.0'
-  gem 'rubocop', '~> 1.65.0'
+  gem 'rubocop', '~> 1.66.0'
   gem 'rubocop-minitest', '~> 0.35.0'
   gem 'rubocop-performance', '~> 1.21.0'
   gem 'rubocop-rake', '~> 0.6.0'