diff --git a/Gemfile b/Gemfile
index 5761c76..8ad0c31 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gemspec
 gem 'asciidoctor', '~> 2.0', require: false # required by yard to render README.adoc
 gem 'minitest', '~> 6.0'
 gem 'rake', '~> 13.4'
-gem 'rubocop', '~> 1.88'
+gem 'rubocop', '~> 1.89'
 gem 'rubocop-minitest', '~> 0.40.0'
 gem 'rubocop-rake', '~> 0.7.1'
 gem 'simplecov', '~> 1.0', require: false # test coverage; output written to coverage/
diff --git a/Gemfile.lock b/Gemfile.lock
index 49e0aad..c20ebd9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,7 +14,7 @@ GEM
     drb (2.2.3)
     ffi (1.17.4-x86_64-linux-gnu)
     fileutils (1.8.0)
-    json (2.21.1)
+    json (2.21.2)
     language_server-protocol (3.17.0.6)
     lint_roller (1.1.0)
     listen (3.10.0)
@@ -41,7 +41,7 @@ GEM
       prism (>= 1.6.0)
       tsort
     regexp_parser (2.12.0)
-    rubocop (1.88.2)
+    rubocop (1.89.0)
       json (~> 2.3)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.1.0)
@@ -99,7 +99,7 @@ DEPENDENCIES
   human_languages!
   minitest (~> 6.0)
   rake (~> 13.4)
-  rubocop (~> 1.88)
+  rubocop (~> 1.89)
   rubocop-minitest (~> 0.40.0)
   rubocop-rake (~> 0.7.1)
   simplecov (~> 1.0)