diff --git a/Gemfile b/Gemfile
index 89cdc57..529fe20 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,5 +7,5 @@ group :development, :test do
   gem 'fasterer', '~> 0.8', require: false
   gem 'rake', '~> 13.0'
   gem 'rspec', '~> 3.9'
-  gem 'rubocop', '~> 0.90', require: false
+  gem 'rubocop', '~> 1.4', require: false
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index dcd4bbb..8ef32a6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
       colorize (~> 0.7)
       ruby_parser (>= 3.14.1)
     json (2.3.1)
-    parallel (1.20.0)
+    parallel (1.20.1)
     parser (2.7.2.0)
       ast (~> 2.4.1)
     rainbow (3.0.0)
@@ -33,16 +33,16 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-support (3.9.4)
-    rubocop (0.90.0)
+    rubocop (1.4.1)
       parallel (~> 1.10)
-      parser (>= 2.7.1.1)
+      parser (>= 2.7.1.5)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.7)
+      regexp_parser (>= 1.8)
       rexml
-      rubocop-ast (>= 0.3.0, < 1.0)
+      rubocop-ast (>= 1.1.1)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (0.8.0)
+    rubocop-ast (1.1.1)
       parser (>= 2.7.1.5)
     ruby-progressbar (1.10.1)
     ruby_parser (3.15.0)
@@ -63,7 +63,7 @@ DEPENDENCIES
   fasterer (~> 0.8)
   rake (~> 13.0)
   rspec (~> 3.9)
-  rubocop (~> 0.90)
+  rubocop (~> 1.4)
 
 RUBY VERSION
    ruby 2.7.0p0