diff --git a/cms_scanner.gemspec b/cms_scanner.gemspec
index f3c1b52..cf6164b 100644
--- a/cms_scanner.gemspec
+++ b/cms_scanner.gemspec
@@ -40,7 +40,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rake',                '~> 13.0'
   s.add_development_dependency 'rspec',               '~> 3.13.0'
   s.add_development_dependency 'rspec-its',           '~> 1.3.0'
-  s.add_development_dependency 'rubocop',             '~> 1.26.0'
+  s.add_development_dependency 'rubocop',             '~> 1.66.1'
   s.add_development_dependency 'rubocop-performance', '~> 1.19.1'
   s.add_development_dependency 'simplecov',           '~> 0.22.0'
   s.add_development_dependency 'simplecov-lcov',      '~> 0.8.0'