diff --git a/Gemfile b/Gemfile
index 585e4f4..254579a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ gem 'multipart-post', '~> 2.4.1', require: false
 
 group :development, :test do
   # ref: http://docs.rubocop.org/en/latest/installation/
-  gem 'rubocop', '~> 1.72.0', require: false
+  gem 'rubocop', '~> 1.73.0', require: false
   gem 'yard', '~> 0.9.20'
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 296bb0a..e59abd0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,7 +43,7 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
     rspec-support (3.13.2)
-    rubocop (1.72.2)
+    rubocop (1.73.0)
       json (~> 2.3)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.1.0)
@@ -54,7 +54,7 @@ GEM
       rubocop-ast (>= 1.38.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 4.0)
-    rubocop-ast (1.38.0)
+    rubocop-ast (1.38.1)
       parser (>= 3.3.1.0)
     ruby-progressbar (1.13.0)
     unicode-display_width (3.1.4)
@@ -76,7 +76,7 @@ DEPENDENCIES
   multipart-post (~> 2.4.1)
   rake (~> 13.0)
   rspec (~> 3.13.0)
-  rubocop (~> 1.72.0)
+  rubocop (~> 1.73.0)
   webmock (~> 3.25.0)
   yard (~> 0.9.20)