diff --git a/Gemfile b/Gemfile
index 7f5f395..a743d66 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', '~> 1.6', require: false
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index df9b6b2..60fc292 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -33,16 +33,16 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.0)
-    rubocop (0.90.0)
+    rubocop (1.6.1)
       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, < 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)
+    rubocop-ast (1.3.0)
       parser (>= 2.7.1.5)
     ruby-progressbar (1.10.1)
     ruby_parser (3.15.0)
@@ -65,7 +65,7 @@ DEPENDENCIES
   fasterer (~> 0.8)
   rake (~> 13.0)
   rspec (~> 3.10)
-  rubocop (~> 0.90)
+  rubocop (~> 1.6)
 
 RUBY VERSION
    ruby 2.7.0p0