diff --git a/oxidized-web.gemspec b/oxidized-web.gemspec
index ce3e1f9..fcdc289 100644
--- a/oxidized-web.gemspec
+++ b/oxidized-web.gemspec
@@ -54,7 +54,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rake',                 '~> 13.0'
   # Rubocop introduces new rules in minor versions, so we limit automatic
   # updates to patches
-  s.add_development_dependency 'rubocop',              '~> 1.89.0'
+  s.add_development_dependency 'rubocop',              '~> 1.91.0'
   s.add_development_dependency 'rubocop-minitest',     '~> 0.39.1'
   s.add_development_dependency 'rubocop-rails',        '~> 2.34.2'
   s.add_development_dependency 'rubocop-rake',         '~> 0.7.1'