diff --git a/asetus.gemspec b/asetus.gemspec
index 2a38fb4..0704a6e 100644
--- a/asetus.gemspec
+++ b/asetus.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency 'bundler',             '~> 2.2'
   s.add_development_dependency 'rake',                '~> 13.0'
-  s.add_development_dependency 'rubocop',             '~> 1.48.0'
+  s.add_development_dependency 'rubocop',             '~> 1.64.1'
   s.add_development_dependency 'rubocop-minitest',    '~> 0.29.0'
   s.add_development_dependency 'rubocop-rake',        '~> 0.6.0'
   s.add_development_dependency 'simplecov',           '~> 0.22.0'