diff --git a/client_side_validations.gemspec b/client_side_validations.gemspec
index 1f29057e7..c26231824 100644
--- a/client_side_validations.gemspec
+++ b/client_side_validations.gemspec
@@ -36,7 +36,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'minitest', '~> 5.14'
   spec.add_development_dependency 'mocha', '~> 1.11'
   spec.add_development_dependency 'rake', '~> 13.0'
-  spec.add_development_dependency 'rubocop', '~> 0.92.0'
+  spec.add_development_dependency 'rubocop', '~> 0.93.0'
   spec.add_development_dependency 'rubocop-performance', '~> 1.8'
   spec.add_development_dependency 'rubocop-rails', '~> 2.8'
   spec.add_development_dependency 'simplecov', '>= 0.18.5', '< 0.20'
diff --git a/lib/generators/client_side_validations/copy_assets_generator.rb b/lib/generators/client_side_validations/copy_assets_generator.rb
index c1454b4c9..aec6b2ab1 100644
--- a/lib/generators/client_side_validations/copy_assets_generator.rb
+++ b/lib/generators/client_side_validations/copy_assets_generator.rb
@@ -4,7 +4,7 @@ module ClientSideValidations
   module Generators
     class CopyAssetsGenerator < Rails::Generators::Base
       def copy_javascript_asset
-        return unless self.class == CopyAssetsGenerator || copy_assets?
+        return unless instance_of?(CopyAssetsGenerator) || copy_assets?
 
         assets.each do |asset|
           source_paths << asset[:path]