diff --git a/.rubocop.yml b/.rubocop.yml
index 6d44e0976e..306aeb917d 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -2,6 +2,7 @@
 # Check out: https://github.com/bbatsov/rubocop
 
 AllCops:
+  NewCops: enable
   DisplayCopNames: true
   TargetRubyVersion: 2.5
 
@@ -110,6 +111,9 @@ Layout/SpaceAroundMethodCallOperator:
 Lint/RaiseException:
   Enabled: true
 
+Lint/EmptyInterpolation:
+  Enabled: false
+
 Lint/StructNewOverride:
   Enabled: true
 
diff --git a/Gemfile b/Gemfile
index cc8b323dec..a0070ee102 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,32 +12,31 @@ gemspec
 # They must be defined here because of the way Travis CI works, in that it will only
 # bundle install from a single Gemfile. Therefore, all gems that we will need for any dummy/example
 # app have to be manually added to this file.
-gem "bootsnap", ">= 1.1.0", require: false
-gem "bootstrap-sass"
-gem "jbuilder"
-gem "jquery-rails"
-gem "mini_racer"
-gem "puma"
-gem "rails_12factor"
-gem "ruby-lint", require: false
-gem "sass-rails"
-gem "scss_lint", require: false
-gem "sdoc", group: :doc
-gem "spring"
-gem "sprockets"
-gem "sqlite3"
-gem "turbolinks"
-gem "uglifier"
-gem "web-console", group: :development
-
-# below are copied from spec/dummy/Gemfile
-gem "capybara"
-gem "capybara-screenshot"
-gem "launchy"
-gem "rspec-rails"
-gem "rspec-retry"
-gem "selenium-webdriver"
-gem "webpacker", ">= 5.2.1"
-
-gem "equivalent-xml", github: "mbklein/equivalent-xml"
-gem "rainbow"
+# gem "bootsnap", ">= 1.1.0", require: false
+# gem "bootstrap-sass"
+# gem "jbuilder"
+# gem "jquery-rails"
+# gem "mini_racer"
+# gem "puma"
+# gem "rails_12factor"
+# gem "sass-rails"
+# gem "scss_lint", require: false
+# gem "sdoc", group: :doc
+# gem "spring"
+# gem "sprockets"
+# gem "sqlite3"
+# gem "turbolinks"
+# gem "uglifier"
+# gem "web-console", group: :development
+#
+# # below are copied from spec/dummy/Gemfile
+# gem "capybara"
+# gem "capybara-screenshot"
+# gem "launchy"
+# gem "rspec-rails"
+# gem "rspec-retry"
+# gem "selenium-webdriver"
+# gem "webpacker", ">= 5.2.1"
+#
+# gem "equivalent-xml", github: "mbklein/equivalent-xml"
+# gem "rainbow"
diff --git a/lib/react_on_rails/test_helper/webpack_assets_compiler.rb b/lib/react_on_rails/test_helper/webpack_assets_compiler.rb
index 644a533b6f..3da9e0fc3e 100644
--- a/lib/react_on_rails/test_helper/webpack_assets_compiler.rb
+++ b/lib/react_on_rails/test_helper/webpack_assets_compiler.rb
@@ -8,7 +8,7 @@ class WebpackAssetsCompiler
       def compile_assets
         if ReactOnRails.configuration.build_test_command.blank?
           msg = <<~MSG
-            You are using the React on Rails test helper. 
+            You are using the React on Rails test helper.
             Either you used:
               ReactOnRails::TestHelper.configure_rspec_to_compile_assets or
               ReactOnRails::TestHelper.ensure_assets_compiled
diff --git a/lib/react_on_rails/utils.rb b/lib/react_on_rails/utils.rb
index 8c2495fb9b..b8eb5ac241 100644
--- a/lib/react_on_rails/utils.rb
+++ b/lib/react_on_rails/utils.rb
@@ -34,7 +34,7 @@ def self.wrap_message(msg, color = :red)
     end
 
     def self.object_to_boolean(value)
-      [true, "true", "yes", 1, "1", "t"].include?(value.class == String ? value.downcase : value)
+      [true, "true", "yes", 1, "1", "t"].include?(value.instance_of?(String) ? value.downcase : value)
     end
 
     def self.server_rendering_is_enabled?
diff --git a/lib/tasks/assets.rake b/lib/tasks/assets.rake
index fdb53cce50..87b40ccfa6 100644
--- a/lib/tasks/assets.rake
+++ b/lib/tasks/assets.rake
@@ -40,10 +40,10 @@ end
 namespace :react_on_rails do
   namespace :assets do
     desc <<-DESC.strip_heredoc
-      Compile assets with webpack	
-      Uses command defined with ReactOnRails.configuration.build_production_command	
-      sh "#{ReactOnRails::Utils.prepend_cd_node_modules_directory('<ReactOnRails.configuration.build_production_command>')}"	
-      Note: This command is not automatically added to assets:precompile if the rails/webpacker	
+      Compile assets with webpack
+      Uses command defined with ReactOnRails.configuration.build_production_command
+      sh "#{ReactOnRails::Utils.prepend_cd_node_modules_directory('<ReactOnRails.configuration.build_production_command>')}"
+      Note: This command is not automatically added to assets:precompile if the rails/webpacker
       configuration file config/webpack/production.js exists.
     DESC
     task webpack: :locale do
diff --git a/rakelib/docker.rake b/rakelib/docker.rake
index 467569104a..6fb0ddaebf 100644
--- a/rakelib/docker.rake
+++ b/rakelib/docker.rake
@@ -6,11 +6,6 @@ namespace :docker do
     sh "docker-compose run lint rake lint:rubocop"
   end
 
-  desc "Run ruby-lint linter from docker"
-  task :ruby do
-    sh "docker-compose run lint rake lint:ruby"
-  end
-
   desc "Run scss-lint linter from docker"
   task :scss do
     sh "docker-compose run lint rake lint:scss"
diff --git a/rakelib/lint.rake b/rakelib/lint.rake
index 17ca283e75..0ff9f738fe 100644
--- a/rakelib/lint.rake
+++ b/rakelib/lint.rake
@@ -10,12 +10,6 @@ namespace :lint do
     sh_in_dir(gem_root, "bundle exec rubocop .")
   end
 
-  desc "Run ruby-lint as shell"
-  task :ruby do
-    puts "See /ruby-lint.yml for what directories are included."
-    sh_in_dir(gem_root, "bundle exec ruby-lint .")
-  end
-
   desc "Run scss-lint as shell"
   task :scss do
     sh_in_dir(gem_root, "bundle exec scss-lint spec/dummy/app/assets/stylesheets/")
@@ -26,7 +20,7 @@ namespace :lint do
     sh_in_dir(gem_root, "yarn run eslint")
   end
 
-  desc "Run all eslint & rubocop linters. Skip ruby-lint and scss"
+  desc "Run all eslint & rubocop linters. Skip scss"
   task lint: %i[eslint rubocop] do
     puts "Completed all linting"
   end
diff --git a/ruby-lint.yml b/ruby-lint.yml
deleted file mode 100644
index d8556e4c74..0000000000
--- a/ruby-lint.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-# Not currently using ruby-lint
----
-presenter: syntastic
-
-# Be sure to edit this per your project!
-directories:
-  - app
-  - lib
-  - spec
-
-ignore_paths:
-  - client
-  - node_modules
-  - coverage
-  - examples
-
-analysis_classes:
-  #  - argument_amount
-  - pedantics
-  - shadowing_variables
-  # Too many false positives for these
-  #  - undefined_methods
-  #  - undefined_variables
-  #  - unused_variables
-  - useless_equality_checks
diff --git a/spec/dummy/Gemfile b/spec/dummy/Gemfile
index d111b8b79d..9d49beb8c9 100644
--- a/spec/dummy/Gemfile
+++ b/spec/dummy/Gemfile
@@ -41,7 +41,7 @@ gem "sdoc", group: :doc
 # Use Unicorn as the app server
 # gem 'unicorn'
 
-gem "sprockets", "~>3.0"
+gem "sprockets"
 
 # Use Capistrano for deployment
 # gem 'capistrano-rails', group: :development
@@ -55,8 +55,7 @@ group :development, :test do
   gem "pry-doc"
   gem "pry-rails"
   gem "pry-rescue"
-  gem "rubocop", require: false
-  gem "ruby-lint", require: false
+  gem "rubocop", "0.93.1", require: false
   gem "scss_lint", require: false
 
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
diff --git a/spec/dummy/Gemfile.lock b/spec/dummy/Gemfile.lock
index ce47ead5ec..ec45eb5a60 100644
--- a/spec/dummy/Gemfile.lock
+++ b/spec/dummy/Gemfile.lock
@@ -151,7 +151,7 @@ GEM
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     parallel (1.19.2)
-    parser (2.7.1.5)
+    parser (2.7.2.0)
       ast (~> 2.4.1)
     pry (0.13.1)
       coderay (~> 1.1)
@@ -207,7 +207,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rdoc (6.2.1)
-    regexp_parser (1.8.1)
+    regexp_parser (1.8.2)
     rexml (3.2.4)
     rspec-core (3.9.2)
       rspec-support (~> 3.9.3)
@@ -230,20 +230,17 @@ GEM
     rspec-support (3.9.3)
     rspec_junit_formatter (0.4.1)
       rspec-core (>= 2, < 4, != 2.12.0)
-    rubocop (0.92.0)
+    rubocop (0.93.1)
       parallel (~> 1.10)
       parser (>= 2.7.1.5)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.7)
+      regexp_parser (>= 1.8)
       rexml
-      rubocop-ast (>= 0.5.0)
+      rubocop-ast (>= 0.6.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (0.7.1)
+    rubocop-ast (1.0.1)
       parser (>= 2.7.1.5)
-    ruby-lint (2.3.1)
-      parser (~> 2.2)
-      slop (~> 3.4, >= 3.4.7)
     ruby-progressbar (1.10.1)
     rubyzip (1.3.0)
     sass (3.7.4)
@@ -274,7 +271,6 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    slop (3.6.0)
     spring (2.1.1)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
@@ -345,14 +341,13 @@ DEPENDENCIES
   rspec-rails
   rspec-retry
   rspec_junit_formatter
-  rubocop
-  ruby-lint
+  rubocop (= 0.93.1)
   sass-rails
   scss_lint
   sdoc
   selenium-webdriver
   spring
-  sprockets (~> 3.0)
+  sprockets
   sqlite3
   turbolinks
   uglifier
diff --git a/spec/dummy/bin/bundle b/spec/dummy/bin/bundle
index 66e9889e8b..5015ba6f8b 100755
--- a/spec/dummy/bin/bundle
+++ b/spec/dummy/bin/bundle
@@ -1,3 +1,5 @@
 #!/usr/bin/env ruby
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
-load Gem.bin_path('bundler', 'bundle')
+# frozen_string_literal: true
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+load Gem.bin_path("bundler", "bundle")
diff --git a/spec/dummy/bin/bundler b/spec/dummy/bin/bundler
index 72c62ec0b5..876ae68307 100755
--- a/spec/dummy/bin/bundler
+++ b/spec/dummy/bin/bundler
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('bundler', 'bundler')
+load Gem.bin_path("bundler", "bundler")
diff --git a/spec/dummy/bin/byebug b/spec/dummy/bin/byebug
index 168cef39c4..ad63f990b2 100755
--- a/spec/dummy/bin/byebug
+++ b/spec/dummy/bin/byebug
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('byebug', 'byebug')
+load Gem.bin_path("byebug", "byebug")
diff --git a/spec/dummy/bin/cdiff b/spec/dummy/bin/cdiff
index 066279d26a..5cdf7f8eab 100755
--- a/spec/dummy/bin/cdiff
+++ b/spec/dummy/bin/cdiff
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('term-ansicolor', 'cdiff')
+load Gem.bin_path("term-ansicolor", "cdiff")
diff --git a/spec/dummy/bin/chromedriver b/spec/dummy/bin/chromedriver
index 2f538aad88..eee16535fe 100755
--- a/spec/dummy/bin/chromedriver
+++ b/spec/dummy/bin/chromedriver
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('chromedriver-helper', 'chromedriver')
+load Gem.bin_path("chromedriver-helper", "chromedriver")
diff --git a/spec/dummy/bin/chromedriver-update b/spec/dummy/bin/chromedriver-update
index 478b304843..6e7ffdc0e1 100755
--- a/spec/dummy/bin/chromedriver-update
+++ b/spec/dummy/bin/chromedriver-update
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('chromedriver-helper', 'chromedriver-update')
+load Gem.bin_path("chromedriver-helper", "chromedriver-update")
diff --git a/spec/dummy/bin/coderay b/spec/dummy/bin/coderay
index 5be1c00953..565f341fdc 100755
--- a/spec/dummy/bin/coderay
+++ b/spec/dummy/bin/coderay
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('coderay', 'coderay')
+load Gem.bin_path("coderay", "coderay")
diff --git a/spec/dummy/bin/colortab b/spec/dummy/bin/colortab
index 195df76fe4..fdd79747c4 100755
--- a/spec/dummy/bin/colortab
+++ b/spec/dummy/bin/colortab
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('term-ansicolor', 'colortab')
+load Gem.bin_path("term-ansicolor", "colortab")
diff --git a/spec/dummy/bin/coveralls b/spec/dummy/bin/coveralls
index 5a8ac811e5..557aeed4df 100755
--- a/spec/dummy/bin/coveralls
+++ b/spec/dummy/bin/coveralls
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('coveralls', 'coveralls')
+load Gem.bin_path("coveralls", "coveralls")
diff --git a/spec/dummy/bin/decolor b/spec/dummy/bin/decolor
index 214e8d18cd..2586b78fd8 100755
--- a/spec/dummy/bin/decolor
+++ b/spec/dummy/bin/decolor
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('term-ansicolor', 'decolor')
+load Gem.bin_path("term-ansicolor", "decolor")
diff --git a/spec/dummy/bin/erubis b/spec/dummy/bin/erubis
index 2c7348b8b3..7265ec892d 100755
--- a/spec/dummy/bin/erubis
+++ b/spec/dummy/bin/erubis
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('erubis', 'erubis')
+load Gem.bin_path("erubis", "erubis")
diff --git a/spec/dummy/bin/htmldiff b/spec/dummy/bin/htmldiff
index c70e238dc2..c1c188c484 100755
--- a/spec/dummy/bin/htmldiff
+++ b/spec/dummy/bin/htmldiff
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('diff-lcs', 'htmldiff')
+load Gem.bin_path("diff-lcs", "htmldiff")
diff --git a/spec/dummy/bin/kill-pry-rescue b/spec/dummy/bin/kill-pry-rescue
index 0a9c76c47c..f331658e2f 100755
--- a/spec/dummy/bin/kill-pry-rescue
+++ b/spec/dummy/bin/kill-pry-rescue
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('pry-rescue', 'kill-pry-rescue')
+load Gem.bin_path("pry-rescue", "kill-pry-rescue")
diff --git a/spec/dummy/bin/launchy b/spec/dummy/bin/launchy
index 92b254ad91..cb13b98cd0 100755
--- a/spec/dummy/bin/launchy
+++ b/spec/dummy/bin/launchy
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('launchy', 'launchy')
+load Gem.bin_path("launchy", "launchy")
diff --git a/spec/dummy/bin/ldiff b/spec/dummy/bin/ldiff
index 8e3524a92e..e48cdda664 100755
--- a/spec/dummy/bin/ldiff
+++ b/spec/dummy/bin/ldiff
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('diff-lcs', 'ldiff')
+load Gem.bin_path("diff-lcs", "ldiff")
diff --git a/spec/dummy/bin/nokogiri b/spec/dummy/bin/nokogiri
index d55f84b057..04da78e1c7 100755
--- a/spec/dummy/bin/nokogiri
+++ b/spec/dummy/bin/nokogiri
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('nokogiri', 'nokogiri')
+load Gem.bin_path("nokogiri", "nokogiri")
diff --git a/spec/dummy/bin/pry b/spec/dummy/bin/pry
index 54678a32c5..c2d7321f73 100755
--- a/spec/dummy/bin/pry
+++ b/spec/dummy/bin/pry
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('pry', 'pry')
+load Gem.bin_path("pry", "pry")
diff --git a/spec/dummy/bin/rackup b/spec/dummy/bin/rackup
index 8cc9953e5c..2cb77790b4 100755
--- a/spec/dummy/bin/rackup
+++ b/spec/dummy/bin/rackup
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('rack', 'rackup')
+load Gem.bin_path("rack", "rackup")
diff --git a/spec/dummy/bin/rails b/spec/dummy/bin/rails
index 5191e6927a..22f2d8deee 100755
--- a/spec/dummy/bin/rails
+++ b/spec/dummy/bin/rails
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
-APP_PATH = File.expand_path('../../config/application', __FILE__)
-require_relative '../config/boot'
-require 'rails/commands'
+# frozen_string_literal: true
+
+APP_PATH = File.expand_path("../config/application", __dir__)
+require_relative "../config/boot"
+require "rails/commands"
diff --git a/spec/dummy/bin/rake b/spec/dummy/bin/rake
index 17240489f6..e436ea54a1 100755
--- a/spec/dummy/bin/rake
+++ b/spec/dummy/bin/rake
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
-require_relative '../config/boot'
-require 'rake'
+# frozen_string_literal: true
+
+require_relative "../config/boot"
+require "rake"
 Rake.application.run
diff --git a/spec/dummy/bin/rdoc b/spec/dummy/bin/rdoc
index f57260f36e..78d3bf559b 100755
--- a/spec/dummy/bin/rdoc
+++ b/spec/dummy/bin/rdoc
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('rdoc', 'rdoc')
+load Gem.bin_path("rdoc", "rdoc")
diff --git a/spec/dummy/bin/rescue b/spec/dummy/bin/rescue
index 0ac42cc308..4f2e23ab16 100755
--- a/spec/dummy/bin/rescue
+++ b/spec/dummy/bin/rescue
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('pry-rescue', 'rescue')
+load Gem.bin_path("pry-rescue", "rescue")
diff --git a/spec/dummy/bin/restclient b/spec/dummy/bin/restclient
index 4d7bdcf92f..f00d6a3645 100755
--- a/spec/dummy/bin/restclient
+++ b/spec/dummy/bin/restclient
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('rest-client', 'restclient')
+load Gem.bin_path("rest-client", "restclient")
diff --git a/spec/dummy/bin/ri b/spec/dummy/bin/ri
index 90f2517da4..4b18851e17 100755
--- a/spec/dummy/bin/ri
+++ b/spec/dummy/bin/ri
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('rdoc', 'ri')
+load Gem.bin_path("rdoc", "ri")
diff --git a/spec/dummy/bin/rspec b/spec/dummy/bin/rspec
index 0c86b5c6fa..f62cd801dc 100755
--- a/spec/dummy/bin/rspec
+++ b/spec/dummy/bin/rspec
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('rspec-core', 'rspec')
+load Gem.bin_path("rspec-core", "rspec")
diff --git a/spec/dummy/bin/rubocop b/spec/dummy/bin/rubocop
index a8a38b7819..c290dcb67d 100755
--- a/spec/dummy/bin/rubocop
+++ b/spec/dummy/bin/rubocop
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('rubocop', 'rubocop')
+load Gem.bin_path("rubocop", "rubocop")
diff --git a/spec/dummy/bin/ruby-lint b/spec/dummy/bin/ruby-lint
deleted file mode 100755
index 62561ce051..0000000000
--- a/spec/dummy/bin/ruby-lint
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/usr/bin/env ruby
-#
-# This file was generated by Bundler.
-#
-# The application 'ruby-lint' is installed as part of a gem, and
-# this file is here to facilitate running it.
-#
-
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
-
-require 'rubygems'
-require 'bundler/setup'
-
-load Gem.bin_path('ruby-lint', 'ruby-lint')
diff --git a/spec/dummy/bin/ruby-parse b/spec/dummy/bin/ruby-parse
index 757c56c93e..1476953207 100755
--- a/spec/dummy/bin/ruby-parse
+++ b/spec/dummy/bin/ruby-parse
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('parser', 'ruby-parse')
+load Gem.bin_path("parser", "ruby-parse")
diff --git a/spec/dummy/bin/ruby-rewrite b/spec/dummy/bin/ruby-rewrite
index f686c65f17..0c3b9da603 100755
--- a/spec/dummy/bin/ruby-rewrite
+++ b/spec/dummy/bin/ruby-rewrite
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('parser', 'ruby-rewrite')
+load Gem.bin_path("parser", "ruby-rewrite")
diff --git a/spec/dummy/bin/sass b/spec/dummy/bin/sass
index d65bb10a3b..4cea8eab87 100755
--- a/spec/dummy/bin/sass
+++ b/spec/dummy/bin/sass
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('sass', 'sass')
+load Gem.bin_path("sass", "sass")
diff --git a/spec/dummy/bin/sass-convert b/spec/dummy/bin/sass-convert
index ddde743f33..ee32ccf628 100755
--- a/spec/dummy/bin/sass-convert
+++ b/spec/dummy/bin/sass-convert
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('sass', 'sass-convert')
+load Gem.bin_path("sass", "sass-convert")
diff --git a/spec/dummy/bin/scss b/spec/dummy/bin/scss
index 9f5e435d63..4dd2d6e9dd 100755
--- a/spec/dummy/bin/scss
+++ b/spec/dummy/bin/scss
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('sass', 'scss')
+load Gem.bin_path("sass", "scss")
diff --git a/spec/dummy/bin/scss-lint b/spec/dummy/bin/scss-lint
index 110639c4ba..33f78d5870 100755
--- a/spec/dummy/bin/scss-lint
+++ b/spec/dummy/bin/scss-lint
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('scss_lint', 'scss-lint')
+load Gem.bin_path("scss_lint", "scss-lint")
diff --git a/spec/dummy/bin/sdoc b/spec/dummy/bin/sdoc
index 9da297e687..c27eaa2a4f 100755
--- a/spec/dummy/bin/sdoc
+++ b/spec/dummy/bin/sdoc
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('sdoc', 'sdoc')
+load Gem.bin_path("sdoc", "sdoc")
diff --git a/spec/dummy/bin/sdoc-merge b/spec/dummy/bin/sdoc-merge
index e29a7d951b..138af657aa 100755
--- a/spec/dummy/bin/sdoc-merge
+++ b/spec/dummy/bin/sdoc-merge
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('sdoc', 'sdoc-merge')
+load Gem.bin_path("sdoc", "sdoc-merge")
diff --git a/spec/dummy/bin/setup b/spec/dummy/bin/setup
index acdb2c1389..71d8493925 100755
--- a/spec/dummy/bin/setup
+++ b/spec/dummy/bin/setup
@@ -1,8 +1,10 @@
 #!/usr/bin/env ruby
-require 'pathname'
+# frozen_string_literal: true
+
+require "pathname"
 
 # path to your application root.
-APP_ROOT = Pathname.new File.expand_path('../../',  __FILE__)
+APP_ROOT = Pathname.new File.expand_path("..", __dir__)
 
 Dir.chdir APP_ROOT do
   # This script is a starting point to setup your application.
diff --git a/spec/dummy/bin/spring b/spec/dummy/bin/spring
index 38fee6fb93..561935c038 100755
--- a/spec/dummy/bin/spring
+++ b/spec/dummy/bin/spring
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('spring', 'spring')
+load Gem.bin_path("spring", "spring")
diff --git a/spec/dummy/bin/sprockets b/spec/dummy/bin/sprockets
index 09a1ad185a..c737b4228f 100755
--- a/spec/dummy/bin/sprockets
+++ b/spec/dummy/bin/sprockets
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('sprockets', 'sprockets')
+load Gem.bin_path("sprockets", "sprockets")
diff --git a/spec/dummy/bin/term_display b/spec/dummy/bin/term_display
index d65c316bae..f95f48882c 100755
--- a/spec/dummy/bin/term_display
+++ b/spec/dummy/bin/term_display
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('term-ansicolor', 'term_display')
+load Gem.bin_path("term-ansicolor", "term_display")
diff --git a/spec/dummy/bin/term_mandel b/spec/dummy/bin/term_mandel
index c7dd35e683..eef9545608 100755
--- a/spec/dummy/bin/term_mandel
+++ b/spec/dummy/bin/term_mandel
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('term-ansicolor', 'term_mandel')
+load Gem.bin_path("term-ansicolor", "term_mandel")
diff --git a/spec/dummy/bin/thor b/spec/dummy/bin/thor
index 8421e001ea..4dd6d33698 100755
--- a/spec/dummy/bin/thor
+++ b/spec/dummy/bin/thor
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('thor', 'thor')
+load Gem.bin_path("thor", "thor")
diff --git a/spec/dummy/bin/tilt b/spec/dummy/bin/tilt
index 09fe73eb3f..c3c12ab0bb 100755
--- a/spec/dummy/bin/tilt
+++ b/spec/dummy/bin/tilt
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('tilt', 'tilt')
+load Gem.bin_path("tilt", "tilt")
diff --git a/spec/dummy/bin/webpack b/spec/dummy/bin/webpack
index 0f1b9157ee..1d36bc6edd 100755
--- a/spec/dummy/bin/webpack
+++ b/spec/dummy/bin/webpack
@@ -1,11 +1,12 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 ENV["RAILS_ENV"] ||= ENV["RACK_ENV"] || "development"
 ENV["NODE_ENV"]  ||= "development"
 
 require "pathname"
 ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+                                           Pathname.new(__FILE__).realpath)
 
 require "bundler/setup"
 
diff --git a/spec/dummy/bin/webpack-dev-server b/spec/dummy/bin/webpack-dev-server
index bfd6a9c9f1..967db5aa8f 100755
--- a/spec/dummy/bin/webpack-dev-server
+++ b/spec/dummy/bin/webpack-dev-server
@@ -1,10 +1,11 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 ENV["RAILS_ENV"] ||= ENV["RACK_ENV"] || "development"
 ENV["NODE_ENV"]  ||= "development"
 require "pathname"
 ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+                                           Pathname.new(__FILE__).realpath)
 
 require "bundler/setup"
 
diff --git a/spec/dummy/bin/yard b/spec/dummy/bin/yard
index bd489a8295..b0f114d875 100755
--- a/spec/dummy/bin/yard
+++ b/spec/dummy/bin/yard
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('yard', 'yard')
+load Gem.bin_path("yard", "yard")
diff --git a/spec/dummy/bin/yardoc b/spec/dummy/bin/yardoc
index 43eff6b0a5..befb8b7c66 100755
--- a/spec/dummy/bin/yardoc
+++ b/spec/dummy/bin/yardoc
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('yard', 'yardoc')
+load Gem.bin_path("yard", "yardoc")
diff --git a/spec/dummy/bin/yri b/spec/dummy/bin/yri
index 05f2461171..d599e3d413 100755
--- a/spec/dummy/bin/yri
+++ b/spec/dummy/bin/yri
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 # This file was generated by Bundler.
 #
@@ -6,11 +8,11 @@
 # this file is here to facilitate running it.
 #
 
-require 'pathname'
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
 
-require 'rubygems'
-require 'bundler/setup'
+require "rubygems"
+require "bundler/setup"
 
-load Gem.bin_path('yard', 'yri')
+load Gem.bin_path("yard", "yri")