diff --git a/Gemfile b/Gemfile
index af4ec4a7..36914244 100644
--- a/Gemfile
+++ b/Gemfile
@@ -16,7 +16,7 @@ group :development do
   gem "debug", "~> 1.9"
   gem "rake", "~> 13.2"
   gem "rspec", "~> 3.13"
-  gem "rubocop", "~> 1.65"
+  gem "rubocop", "~> 1.66"
   gem "rubocop-performance", "~> 1.21"
   gem "rubocop-rake", "~> 0.6.0"
   gem "rubocop-rspec", "~> 3.0"
diff --git a/Gemfile.lock b/Gemfile.lock
index 71e9d015..413cb2b5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -200,15 +200,14 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
     rspec-support (3.13.1)
-    rubocop (1.65.1)
+    rubocop (1.66.0)
       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 (>= 1.32.1, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.32.1)
@@ -293,7 +292,7 @@ DEPENDENCIES
   debug (~> 1.9)
   rake (~> 13.2)
   rspec (~> 3.13)
-  rubocop (~> 1.65)
+  rubocop (~> 1.66)
   rubocop-performance (~> 1.21)
   rubocop-rake (~> 0.6.0)
   rubocop-rspec (~> 3.0)