diff --git a/Gemfile.lock b/Gemfile.lock
index 9eb5125..ff06d5d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,7 +52,6 @@ GEM
     rainbow (3.1.1)
     rake (13.2.1)
     regexp_parser (2.9.2)
-    rexml (3.3.7)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -66,15 +65,14 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
     rspec-support (3.13.1)
-    rubocop (1.65.1)
+    rubocop (1.66.1)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 2.4, < 3.0)
-      rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.31.1, < 2.0)
+      rubocop-ast (>= 1.32.2, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.32.3)
@@ -110,7 +108,7 @@ DEPENDENCIES
   pry
   rake
   rspec (~> 3)
-  rubocop (~> 1.65.0)
+  rubocop (~> 1.66.1)
   rubocop-performance
   rubocop-rails (~> 2.26.0)
   rubocop-rspec
diff --git a/janus-ar.gemspec b/janus-ar.gemspec
index ad4d845..9ab1f95 100644
--- a/janus-ar.gemspec
+++ b/janus-ar.gemspec
@@ -28,7 +28,7 @@ Gem::Specification.new do |gem|
   gem.add_development_dependency 'pry'
   gem.add_development_dependency 'rake'
   gem.add_development_dependency 'rspec', '~> 3'
-  gem.add_development_dependency 'rubocop', '~> 1.65.0'
+  gem.add_development_dependency 'rubocop', '~> 1.66.1'
   gem.add_development_dependency 'rubocop-rails', '~> 2.26.0'
   gem.add_development_dependency 'rubocop-rspec'
   gem.add_development_dependency 'rubocop-thread_safety'