diff --git a/Gemfile b/Gemfile
index 7f5f395..6c37652 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', '~> 3.10'
-  gem 'rubocop', '~> 0.90', require: false
+  gem 'rubocop', '~> 1.8', require: false
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index ed3cbb1..53dc783 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,11 +12,11 @@ GEM
       colorize (~> 0.7)
       ruby_parser (>= 3.14.1)
     parallel (1.20.1)
-    parser (2.7.2.0)
+    parser (3.0.0.0)
       ast (~> 2.4.1)
     rainbow (3.0.0)
     rake (13.0.3)
-    regexp_parser (2.0.0)
+    regexp_parser (2.0.3)
     rexml (3.2.4)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
@@ -31,18 +31,18 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.0)
-    rubocop (0.90.0)
+    rubocop (1.8.0)
       parallel (~> 1.10)
-      parser (>= 2.7.1.1)
+      parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.7)
+      regexp_parser (>= 1.8, < 3.0)
       rexml
-      rubocop-ast (>= 0.3.0, < 1.0)
+      rubocop-ast (>= 1.2.0, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (0.8.0)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.4.0)
       parser (>= 2.7.1.5)
-    ruby-progressbar (1.10.1)
+    ruby-progressbar (1.11.0)
     ruby_parser (3.15.0)
       sexp_processor (~> 4.9)
     sexp_processor (4.15.1)
@@ -50,7 +50,7 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
     simplecov-html (0.12.3)
-    unicode-display_width (1.7.0)
+    unicode-display_width (2.0.0)
 
 PLATFORMS
   ruby
@@ -61,7 +61,7 @@ DEPENDENCIES
   fasterer (~> 0.8)
   rake (~> 13.0)
   rspec (~> 3.10)
-  rubocop (~> 0.90)
+  rubocop (~> 1.8)
 
 RUBY VERSION
    ruby 2.7.0p0