diff --git a/Gemfile b/Gemfile
index 51144ad..740fb72 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ gem 'minitest-ci', '~> 3.4'
 gem 'minitest-reporters', '~> 1.3'
 gem 'rake', '~> 13.0'
 gem 'rake-compiler', '~> 1.2'
-gem 'rubocop', '1.24.1'
+gem 'rubocop', '1.30.1'
 gem 'rubocop-minitest', '0.20.1'
 gem 'rubocop-packaging', '0.5.1'
 gem 'rubocop-performance', '1.14.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index 99d0c1e..4127745 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,13 +26,13 @@ GEM
       rake
     regexp_parser (2.5.0)
     rexml (3.2.5)
-    rubocop (1.24.1)
+    rubocop (1.30.1)
       parallel (~> 1.10)
-      parser (>= 3.0.0.0)
+      parser (>= 3.1.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
-      rexml
-      rubocop-ast (>= 1.15.1, < 2.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.18.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
     rubocop-ast (1.18.0)
@@ -59,7 +59,7 @@ DEPENDENCIES
   minitest-reporters (~> 1.3)
   rake (~> 13.0)
   rake-compiler (~> 1.2)
-  rubocop (= 1.24.1)
+  rubocop (= 1.30.1)
   rubocop-minitest (= 0.20.1)
   rubocop-packaging (= 0.5.1)
   rubocop-performance (= 1.14.2)