diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f2f8597f..fb8e56d3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,12 +25,12 @@ jobs:
           - 3.2
           - 3.1
         rails:
-          - 6.1 # TODO: move to 7.2
+          - 7.2
         include:
           # Edge
           - { ruby: 'head', rails: 'edge', allow-fail: true }
           # Outdated
-          - { ruby: '3.0',  rails: '6.1' } # TODO: move to 7.1
+          - { ruby: '3.0',  rails: '7.1' }
           - { ruby: '2.7',  rails: '6'   } # RSpec AR Expectations support Rails 7.1 since Ruby 3.0
           - { ruby: '2.6',  rails: '6'   }
           - { ruby: '2.5',  rails: '6'   }
diff --git a/.rspec b/.rspec
index fdd4d9d8..e4d136b7 100644
--- a/.rspec
+++ b/.rspec
@@ -1,2 +1 @@
---color
---order rand
+--format progress
diff --git a/Gemfile b/Gemfile
index c6842495..5db18794 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ gem 'puma'
 
 platforms :ruby do
   if RUBY_VERSION >= "2.5.0"
-    gem 'sqlite3', '~> 1.4'
+    gem 'sqlite3'
   else
     gem 'sqlite3', '~> 1.3.6'
   end
@@ -17,8 +17,6 @@ platforms :jruby do
   gem "activerecord-jdbcsqlite3-adapter"
 end
 
-gem 'mongoid'
-
 case rails_version = ENV['RAILS_VERSION']
 when nil
   gem 'rails'
@@ -28,6 +26,10 @@ else
   gem 'rails', "~> #{rails_version}.0"
 end
 
+gem 'mongoid' unless
+    rails_version == 'edge'
+gem 'active_model_serializers'
+
 case RUBY_VERSION
 when '2.6'...'3.0'
   gem "turbo-rails", "<= 2.0.7"
diff --git a/draper.gemspec b/draper.gemspec
index b159217f..3ec083f5 100644
--- a/draper.gemspec
+++ b/draper.gemspec
@@ -29,7 +29,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rspec-activerecord-expectations'
   s.add_development_dependency 'minitest-rails'
   s.add_development_dependency 'capybara'
-  s.add_development_dependency 'active_model_serializers', '>= 0.10'
   s.add_development_dependency 'rubocop'
   s.add_development_dependency 'simplecov'
 end
diff --git a/spec/dummy/.rspec b/spec/dummy/.rspec
index 5f164763..e4d136b7 100644
--- a/spec/dummy/.rspec
+++ b/spec/dummy/.rspec
@@ -1,2 +1 @@
---color
 --format progress
diff --git a/spec/dummy/app/decorators/mongoid_post_decorator.rb b/spec/dummy/app/decorators/mongoid_post_decorator.rb
index 42d87e06..61596e42 100644
--- a/spec/dummy/app/decorators/mongoid_post_decorator.rb
+++ b/spec/dummy/app/decorators/mongoid_post_decorator.rb
@@ -1,4 +1,2 @@
-if defined?(Mongoid)
-  class MongoidPostDecorator < Draper::Decorator
-  end
+class MongoidPostDecorator < Draper::Decorator
 end
diff --git a/spec/dummy/app/models/admin.rb b/spec/dummy/app/models/admin.rb
index 3bf08dd2..f1d81e6c 100644
--- a/spec/dummy/app/models/admin.rb
+++ b/spec/dummy/app/models/admin.rb
@@ -1,5 +1,3 @@
-if defined?(Devise)
-  class Admin
-    extend Devise::Models
-  end
+class Admin
+  extend Devise::Models if defined? Devise
 end
diff --git a/spec/dummy/app/models/mongoid_post.rb b/spec/dummy/app/models/mongoid_post.rb
index aba35210..7ec46175 100644
--- a/spec/dummy/app/models/mongoid_post.rb
+++ b/spec/dummy/app/models/mongoid_post.rb
@@ -1,5 +1,3 @@
-if defined?(Mongoid)
-  class MongoidPost
-    include Mongoid::Document
-  end
+class MongoidPost
+  include Mongoid::Document if defined? Mongoid
 end
diff --git a/spec/dummy/app/models/post.rb b/spec/dummy/app/models/post.rb
index 7bf61aa0..0cbe9171 100644
--- a/spec/dummy/app/models/post.rb
+++ b/spec/dummy/app/models/post.rb
@@ -1,5 +1,3 @@
-require 'turbo/broadcastable' if defined? Turbo::Broadcastable # HACK: looks weird, but works
-
 class Post < ApplicationRecord
   # attr_accessible :title, :body
 
diff --git a/spec/dummy/app/models/user.rb b/spec/dummy/app/models/user.rb
index 04101867..8aba8c0f 100644
--- a/spec/dummy/app/models/user.rb
+++ b/spec/dummy/app/models/user.rb
@@ -1,5 +1,3 @@
-if defined?(Devise)
-  class User
-    extend Devise::Models
-  end
+class User
+  extend Devise::Models if defined? Devise
 end
diff --git a/spec/dummy/config/application.rb b/spec/dummy/config/application.rb
index 159f806c..e27e52b6 100644
--- a/spec/dummy/config/application.rb
+++ b/spec/dummy/config/application.rb
@@ -1,64 +1,34 @@
-require File.expand_path('../boot', __FILE__)
-
-def attempt_require(file)
-  require file
-rescue LoadError
-end
+require_relative 'boot'
 
 require 'rails/all'
-require 'draper'
-attempt_require 'mongoid'
-attempt_require 'devise'
-attempt_require 'turbo-rails'
-require 'active_model_serializers'
+
+# Require the gems listed in Gemfile, including any gems
+# you've limited to :test, :development, or :production.
+Kernel.silence_warnings do
+  Bundler.require(*Rails.groups)
+end
 
 module Dummy
   class Application < Rails::Application
-    # Settings in config/environments/* take precedence over those specified here.
-    # Application configuration should go into files in config/initializers
-    # -- all .rb files in that directory are automatically loaded.
-
-    # Custom directories with classes and modules you want to be autoloadable.
-    # config.autoload_paths += %W(#{config.root}/extras)
-
-    # Only load the plugins named here, in the order given (default is alphabetical).
-    # :all can be used as a placeholder for all plugins not explicitly named.
-    # config.plugins = [ :exception_notification, :ssl_requirement, :all ]
-
-    # Activate observers that should always be running.
-    # config.active_record.observers = :cacher, :garbage_collector, :forum_observer
-
-    # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
-    # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
-    # config.time_zone = 'Central Time (US & Canada)'
-
-    # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
-    # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
-    # config.i18n.default_locale = :de
-
-    # Configure the default encoding used in templates for Ruby 1.9.
-    config.encoding = "utf-8"
-
-    # Enable escaping HTML in JSON.
-    config.active_support.escape_html_entities_in_json = true
-
-    # Use SQL instead of Active Record's schema dumper when creating the database.
-    # This is necessary if your schema can't be completely dumped by the schema dumper,
-    # like if you have constraints or database-specific column types
-    # config.active_record.schema_format = :sql
+    config.load_defaults Rails::VERSION::STRING.to_f
 
-    # Enforce whitelist mode for mass assignment.
-    # This will create an empty whitelist of attributes available for mass-assignment for all models
-    # in your app. As such, your models will need to explicitly whitelist or blacklist accessible
-    # parameters by using an attr_accessible or attr_protected declaration.
-    # config.active_record.whitelist_attributes = true
+    # For compatibility with applications that use this config
+    # config.action_controller.include_all_helpers = false # FIXME
 
-    # Enable the asset pipeline
-    # config.assets.enabled = true
+    # Please, add to the `ignore` list any other `lib` subdirectories that do
+    # not contain `.rb` files, or that should not be reloaded or eager loaded.
+    # Common ones are `templates`, `generators`, or `middleware`, for example.
+    config.try :autoload_lib, ignore: %w[assets tasks] # HACK for Rails below 7
 
-    # Version of your assets, change this if you want to expire all your assets
-    # config.assets.version = '1.0'
+    # Configuration for the application, engines, and railties goes here.
+    #
+    # These settings can be overridden in specific environments using the files
+    # in config/environments, which are processed later.
+    #
+    # config.time_zone = "Central Time (US & Canada)"
+    # config.eager_load_paths << Rails.root.join("extras")
 
+    # HACK: allows testing in production & development environments
     # Tell Action Mailer not to deliver emails to the real world.
     # The :test delivery method accumulates sent emails in the
     # ActionMailer::Base.deliveries array.
diff --git a/spec/dummy/config/environments/development.rb b/spec/dummy/config/environments/development.rb
index 80d91ee2..c2dd02e5 100644
--- a/spec/dummy/config/environments/development.rb
+++ b/spec/dummy/config/environments/development.rb
@@ -1,35 +1,78 @@
-Dummy::Application.configure do
-  # Settings specified here will take precedence over those in config/application.rb
+require "active_support/core_ext/integer/time"
 
-  # In the development environment your application's code is reloaded on
-  # every request. This slows down response time but is perfect for development
+Rails.application.configure do
+  # Settings specified here will take precedence over those in config/application.rb.
+
+  # In the development environment your application's code is reloaded any time
+  # it changes. This slows down response time but is perfect for development
   # since you don't have to restart the web server when you make code changes.
-  config.cache_classes = false
+  config.enable_reloading = true
+
+  # Do not eager load code on boot.
+  config.eager_load = false
+
+  # Show full error reports.
+  config.consider_all_requests_local = true
+
+  # Enable server timing.
+  config.server_timing = true
 
-  # Show full error reports and disable caching
-  config.consider_all_requests_local       = true
-  config.action_controller.perform_caching = false
+  # Enable/disable caching. By default caching is disabled.
+  # Run rails dev:cache to toggle caching.
+  if Rails.root.join("tmp/caching-dev.txt").exist?
+    config.action_controller.perform_caching               = true
+    config.action_controller.enable_fragment_cache_logging = true
+
+    config.cache_store                = :memory_store
+    config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{2.days.to_i}" }
+  else
+    config.action_controller.perform_caching = false
+
+    config.cache_store = :null_store
+  end
+
+  # Store uploaded files on the local file system (see config/storage.yml for options).
+  config.active_storage.service = :local
 
-  # Print deprecation notices to the Rails logger
+  # Don't care if the mailer can't send.
+  config.action_mailer.raise_delivery_errors = false
+
+  # Disable caching for Action Mailer templates even if Action Controller
+  # caching is enabled.
+  config.action_mailer.perform_caching = false
+
+  config.action_mailer.default_url_options = { host: "localhost", port: 3000 }
+
+  # Print deprecation notices to the Rails logger.
   config.active_support.deprecation = :log
 
-  # Only use best-standards-support built into browsers
-  config.action_dispatch.best_standards_support = :builtin
+  # Raise exceptions for disallowed deprecations.
+  config.active_support.disallowed_deprecation = :raise
 
-  config.eager_load = false
+  # Tell Active Support which deprecation messages to disallow.
+  config.active_support.disallowed_deprecation_warnings = []
 
-  # Raise exception on mass assignment protection for Active Record models
-  # config.active_record.mass_assignment_sanitizer = :strict
+  # Raise an error on page load if there are pending migrations.
+  config.active_record.migration_error = :page_load
 
-  # Log the query plan for queries taking more than this (works
-  # with SQLite, MySQL, and PostgreSQL)
-  # config.active_record.auto_explain_threshold_in_seconds = 0.5
+  # Highlight code that triggered database queries in logs.
+  config.active_record.verbose_query_logs = true
 
-  # Do not compress assets
-  # config.assets.compress = false
+  # Highlight code that enqueued background job in logs.
+  # config.active_job.verbose_enqueue_logs = true
 
-  # Expands the lines which load the assets
-  # config.assets.debug = true
+  # Suppress logger output for asset requests.
+  # config.assets.quiet = true
 
-  config.active_storage.service = :local
+  # Raises error for missing translations.
+  # config.i18n.raise_on_missing_translations = true
+
+  # Annotate rendered view with file names.
+  # config.action_view.annotate_rendered_view_with_filenames = true
+
+  # Uncomment if you wish to allow Action Cable access from any origin.
+  # config.action_cable.disable_request_forgery_protection = true
+
+  # Raise error when a before_action's only/except options reference missing actions.
+  # config.action_controller.raise_on_missing_callback_actions = true
 end
diff --git a/spec/dummy/config/environments/production.rb b/spec/dummy/config/environments/production.rb
index fb828684..aaebc3ae 100644
--- a/spec/dummy/config/environments/production.rb
+++ b/spec/dummy/config/environments/production.rb
@@ -1,59 +1,102 @@
-Dummy::Application.configure do
-  # Settings specified here will take precedence over those in config/application.rb
+require "active_support/core_ext/integer/time"
 
-  # Code is not reloaded between requests
-  config.cache_classes = true
+Rails.application.configure do
+  # Settings specified here will take precedence over those in config/application.rb.
 
-  # Full error reports are disabled and caching is turned on
+  # Code is not reloaded between requests.
+  config.enable_reloading = false
+
+  # Eager load code on boot. This eager loads most of Rails and
+  # your application in memory, allowing both threaded web servers
+  # and those relying on copy on write to perform better.
+  # Rake tasks automatically ignore this option for performance.
+  config.eager_load = true
+
+  # Full error reports are disabled and caching is turned on.
   config.consider_all_requests_local       = false
   config.action_controller.perform_caching = true
 
-  # Disable Rails's static asset server (Apache or nginx will already do this)
-  config.serve_static_assets = false
+  # Ensures that a master key has been made available in ENV["RAILS_MASTER_KEY"], config/master.key, or an environment
+  # key such as config/credentials/production.key. This key is used to decrypt credentials (and other encrypted files).
+  # config.require_master_key = true
 
-  config.eager_load = true
+  # Disable serving static files from `public/`, relying on NGINX/Apache to do so instead.
+  # config.public_file_server.enabled = false
+
+  # Compress CSS using a preprocessor.
+  # config.assets.css_compressor = :sass
+
+  # Do not fall back to assets pipeline if a precompiled asset is missed.
+  # config.assets.compile = false
 
-  # Defaults to nil and saved in location specified by config.assets.prefix
-  # config.assets.manifest = YOUR_PATH
+  # Enable serving of images, stylesheets, and JavaScripts from an asset server.
+  # config.asset_host = "http://assets.example.com"
 
-  # Specifies the header that your server uses for sending files
-  # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for apache
-  # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx
+  # Specifies the header that your server uses for sending files.
+  # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for Apache
+  # config.action_dispatch.x_sendfile_header = "X-Accel-Redirect" # for NGINX
+
+  # Store uploaded files on the local file system (see config/storage.yml for options).
+  config.active_storage.service = :local
+
+  # Mount Action Cable outside main process or domain.
+  # config.action_cable.mount_path = nil
+  # config.action_cable.url = "wss://example.com/cable"
+  # config.action_cable.allowed_request_origins = [ "http://example.com", /http:\/\/example.*/ ]
+
+  # Assume all access to the app is happening through a SSL-terminating reverse proxy.
+  # Can be used together with config.force_ssl for Strict-Transport-Security and secure cookies.
+  # config.assume_ssl = true
 
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
   # config.force_ssl = true
 
-  # See everything in the log (default is :info)
-  # config.log_level = :debug
+  # Skip http-to-https redirect for the default health check endpoint.
+  # config.ssl_options = { redirect: { exclude: ->(request) { request.path == "/up" } } }
+
+  # Log to STDOUT by default
+  config.logger = ActiveSupport::Logger.new(STDOUT)
+      .tap { |logger| logger.formatter = ::Logger::Formatter.new }
+      .tap { |logger| break ActiveSupport::TaggedLogging.new logger }
 
-  # Prepend all log lines with the following tags
-  # config.log_tags = [ :subdomain, :uuid ]
+  # Prepend all log lines with the following tags.
+  config.log_tags = [:request_id]
 
-  # Use a different logger for distributed setups
-  # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
+  # "info" includes generic and useful information about system operation, but avoids logging too much
+  # information to avoid inadvertent exposure of personally identifiable information (PII). If you
+  # want to log everything, set the level to "debug".
+  config.log_level = ENV.fetch("RAILS_LOG_LEVEL", "info")
 
-  # Use a different cache store in production
+  # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
 
-  # Enable serving of images, stylesheets, and JavaScripts from an asset server
-  # config.action_controller.asset_host = "http://assets.example.com"
+  # Use a real queuing backend for Active Job (and separate queues per environment).
+  # config.active_job.queue_adapter = :resque
+  # config.active_job.queue_name_prefix = "dummy_production"
 
-  # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)
-  # config.assets.precompile += %w( search.js )
+  # Disable caching for Action Mailer templates even if Action Controller
+  # caching is enabled.
+  config.action_mailer.perform_caching = false
 
-  # Enable threaded mode
-  # config.threadsafe!
+  # Ignore bad email addresses and do not raise email delivery errors.
+  # Set this to true and configure the email server for immediate delivery to raise delivery errors.
+  # config.action_mailer.raise_delivery_errors = false
 
   # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
-  # the I18n.default_locale when a translation can not be found)
+  # the I18n.default_locale when a translation cannot be found).
   config.i18n.fallbacks = true
 
-  # Send deprecation notices to registered listeners
-  config.active_support.deprecation = :notify
+  # Don't log any deprecations.
+  config.active_support.report_deprecations = false
 
-  # Log the query plan for queries taking more than this (works
-  # with SQLite, MySQL, and PostgreSQL)
-  # config.active_record.auto_explain_threshold_in_seconds = 0.5
+  # Do not dump schema after migrations.
+  config.active_record.dump_schema_after_migration = false
 
-  config.active_storage.service = :local
+  # Enable DNS rebinding protection and other `Host` header attacks.
+  # config.hosts = [
+  #   "example.com",     # Allow requests from example.com
+  #   /.*\.example\.com/ # Allow requests from subdomains like `www.example.com`
+  # ]
+  # Skip DNS rebinding protection for the default health check endpoint.
+  # config.host_authorization = { exclude: ->(request) { request.path == "/up" } }
 end
diff --git a/spec/dummy/config/environments/test.rb b/spec/dummy/config/environments/test.rb
index de472e37..53df8948 100644
--- a/spec/dummy/config/environments/test.rb
+++ b/spec/dummy/config/environments/test.rb
@@ -1,35 +1,69 @@
-Dummy::Application.configure do
-  # Settings specified here will take precedence over those in config/application.rb
+require "active_support/core_ext/integer/time"
 
-  # The test environment is used exclusively to run your application's
-  # test suite. You never need to work with it otherwise. Remember that
-  # your test database is "scratch space" for the test suite and is wiped
-  # and recreated between test runs. Don't rely on the data there!
-  config.cache_classes = true
+# The test environment is used exclusively to run your application's
+# test suite. You never need to work with it otherwise. Remember that
+# your test database is "scratch space" for the test suite and is wiped
+# and recreated between test runs. Don't rely on the data there!
 
-  # Configure static asset server for tests with Cache-Control for performance
-  # config.serve_static_assets = true
-  # config.static_cache_control = "public, max-age=3600"
+Rails.application.configure do
+  # Settings specified here will take precedence over those in config/application.rb.
 
-  # Show full error reports and disable caching
+  # While tests run files are not watched, reloading is not necessary.
+  config.enable_reloading = false
+
+  # Eager loading loads your entire application. When running a single test locally,
+  # this is usually not necessary, and can slow down your test suite. However, it's
+  # recommended that you enable it in continuous integration systems to ensure eager
+  # loading is working properly before deploying your code.
+  config.eager_load = ENV["CI"].present?
+
+  # Configure public file server for tests with Cache-Control for performance.
+  config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{1.hour.to_i}" }
+
+  # Show full error reports and disable caching.
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = false
+  config.cache_store                       = :null_store
 
-  # Raise exceptions instead of rendering exception templates
-  config.action_dispatch.show_exceptions = false
+  # Render exception templates for rescuable exceptions and raise for other exceptions.
+  config.action_dispatch.show_exceptions = :rescuable
+
+  # Disable request forgery protection in test environment.
+  config.action_controller.allow_forgery_protection = false
+
+  # Store uploaded files on the local file system in a temporary directory.
+  config.active_storage.service = :test
 
-  # Disable request forgery protection in test environment
-  config.action_controller.allow_forgery_protection    = false
+  config.active_job.queue_adapter = :test # TODO: remove alongside support for Rails below 7.2
 
-  # Raise exception on mass assignment protection for Active Record models
-  # config.active_record.mass_assignment_sanitizer = :strict
+  # Disable caching for Action Mailer templates even if Action Controller
+  # caching is enabled.
+  config.action_mailer.perform_caching = false
 
-  # Print deprecation notices to the stderr
+  # Tell Action Mailer not to deliver emails to the real world.
+  # The :test delivery method accumulates sent emails in the
+  # ActionMailer::Base.deliveries array.
+  config.action_mailer.delivery_method = :test
+
+  # Unlike controllers, the mailer instance doesn't have any context about the
+  # incoming request so you'll need to provide the :host parameter yourself.
+  config.action_mailer.default_url_options = { host: "www.example.com" }
+
+  # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr
 
-  config.eager_load = false
+  # Raise exceptions for disallowed deprecations.
+  config.active_support.disallowed_deprecation = :raise
 
-  config.active_job.queue_adapter = :test
+  # Tell Active Support which deprecation messages to disallow.
+  config.active_support.disallowed_deprecation_warnings = []
 
-  config.active_storage.service = :test
+  # Raises error for missing translations.
+  # config.i18n.raise_on_missing_translations = true
+
+  # Annotate rendered view with file names.
+  # config.action_view.annotate_rendered_view_with_filenames = true
+
+  # Raise error when a before_action's only/except options reference missing actions.
+  # config.action_controller.raise_on_missing_callback_actions = true
 end
diff --git a/spec/dummy/config/initializers/draper.rb b/spec/dummy/config/initializers/draper.rb
index 414d9d69..a33c1f8c 100644
--- a/spec/dummy/config/initializers/draper.rb
+++ b/spec/dummy/config/initializers/draper.rb
@@ -1,3 +1,5 @@
-Draper.configure do |config|
-  config.default_controller = BaseController
+Rails.application.config.to_prepare do
+  Draper.configure do |config|
+    config.default_controller = BaseController
+  end
 end
diff --git a/spec/dummy/spec/decorators/active_model_serializers_spec.rb b/spec/dummy/spec/decorators/active_model_serializers_spec.rb
index ee83e24d..fc43dc8d 100644
--- a/spec/dummy/spec/decorators/active_model_serializers_spec.rb
+++ b/spec/dummy/spec/decorators/active_model_serializers_spec.rb
@@ -1,4 +1,4 @@
-require 'spec_helper'
+require 'rails_helper'
 
 describe Draper::CollectionDecorator do
   describe "#active_model_serializer" do
diff --git a/spec/dummy/spec/decorators/post_decorator_spec.rb b/spec/dummy/spec/decorators/post_decorator_spec.rb
index 7260e68b..37663aa6 100644
--- a/spec/dummy/spec/decorators/post_decorator_spec.rb
+++ b/spec/dummy/spec/decorators/post_decorator_spec.rb
@@ -1,4 +1,4 @@
-require 'spec_helper'
+require 'rails_helper'
 
 describe PostDecorator do
   let(:decorator) { PostDecorator.new(object) }
diff --git a/spec/dummy/spec/jobs/publish_post_job_spec.rb b/spec/dummy/spec/jobs/publish_post_job_spec.rb
index c809f42a..d3d14913 100644
--- a/spec/dummy/spec/jobs/publish_post_job_spec.rb
+++ b/spec/dummy/spec/jobs/publish_post_job_spec.rb
@@ -1,3 +1,5 @@
+require 'rails_helper'
+
 RSpec.describe PublishPostJob, type: :job do
   let(:post) { Post.create.decorate }
 
diff --git a/spec/dummy/spec/mailers/post_mailer_spec.rb b/spec/dummy/spec/mailers/post_mailer_spec.rb
index 4ab0135d..17ae588e 100644
--- a/spec/dummy/spec/mailers/post_mailer_spec.rb
+++ b/spec/dummy/spec/mailers/post_mailer_spec.rb
@@ -1,4 +1,4 @@
-require 'spec_helper'
+require 'rails_helper'
 
 describe PostMailer do
   describe "#decorated_email" do
diff --git a/spec/dummy/spec/models/application_spec.rb b/spec/dummy/spec/models/application_spec.rb
index 5fed74b0..85ed4a45 100644
--- a/spec/dummy/spec/models/application_spec.rb
+++ b/spec/dummy/spec/models/application_spec.rb
@@ -1,4 +1,4 @@
-require 'spec_helper'
+require 'rails_helper'
 
 describe ApplicationRecord do
   it { expect(described_class.superclass).to eq ActiveRecord::Base }
diff --git a/spec/dummy/spec/models/post_spec.rb b/spec/dummy/spec/models/post_spec.rb
index 808000ac..51ce22a0 100644
--- a/spec/dummy/spec/models/post_spec.rb
+++ b/spec/dummy/spec/models/post_spec.rb
@@ -1,4 +1,4 @@
-require 'spec_helper'
+require 'rails_helper'
 require 'shared_examples/decoratable'
 
 RSpec.describe Post do
diff --git a/spec/dummy/spec/rails_helper.rb b/spec/dummy/spec/rails_helper.rb
new file mode 100644
index 00000000..f40ffd01
--- /dev/null
+++ b/spec/dummy/spec/rails_helper.rb
@@ -0,0 +1,69 @@
+# This file is copied to spec/ when you run 'rails generate rspec:install'
+require 'spec_helper'
+ENV['RAILS_ENV'] ||= 'test'
+require_relative '../config/environment'
+# Prevent database truncation if the environment is production
+abort("The Rails environment is running in production mode!") if Rails.env.production?
+require 'rspec/rails'
+require 'rspec/activerecord/expectations'
+# Add additional requires below this line. Rails is not loaded until this point!
+
+# Requires supporting ruby files with custom matchers and macros, etc, in
+# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
+# run as spec files by default. This means that files in spec/support that end
+# in _spec.rb will both be required and run as specs, causing the specs to be
+# run twice. It is recommended that you do not name files matching this glob to
+# end with _spec.rb. You can configure this pattern with the --pattern
+# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
+#
+# The following line is provided for convenience purposes. It has the downside
+# of increasing the boot-up time by auto-requiring all files in the support
+# directory. Alternatively, in the individual `*_spec.rb` files, manually
+# require only the support files necessary.
+#
+# Rails.root.glob('spec/support/**/*.rb').sort.each { |f| require f }
+
+# Checks for pending migrations and applies them before tests are run.
+# If you are not using ActiveRecord, you can remove these lines.
+begin
+  ActiveRecord::Migration.maintain_test_schema!
+rescue ActiveRecord::PendingMigrationError => e
+  abort e.to_s.strip
+end
+RSpec.configure do |config|
+  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
+  # config.fixture_paths = [
+  #     Rails.root.join('spec/fixtures')
+  # ]
+
+  # If you're not using ActiveRecord, or you'd prefer not to run each of your
+  # examples within a transaction, remove the following line or assign false
+  # instead of true.
+  # config.use_transactional_fixtures = true
+
+  # You can uncomment this line to turn off ActiveRecord support entirely.
+  # config.use_active_record = false
+
+  # RSpec Rails can automatically mix in different behaviours to your tests
+  # based on their file location, for example enabling you to call `get` and
+  # `post` in specs under `spec/controllers`.
+  #
+  # You can disable this behaviour by removing the line below, and instead
+  # explicitly tag your specs with their type, e.g.:
+  #
+  #     RSpec.describe UsersController, type: :controller do
+  #       # ...
+  #     end
+  #
+  # The different available types are documented in the features, such as in
+  # https://rspec.info/features/6-0/rspec-rails
+  config.infer_spec_type_from_file_location!
+
+  # Filter lines from Rails gems in backtraces.
+  config.filter_rails_from_backtrace!
+  # arbitrary gems may also be filtered via:
+  # config.filter_gems_from_backtrace("gem name")
+
+  # Extra matchers
+  config.include RSpec::ActiveRecord::Expectations
+end
diff --git a/spec/dummy/spec/spec_helper.rb b/spec/dummy/spec/spec_helper.rb
index 367bac66..36280f2d 100644
--- a/spec/dummy/spec/spec_helper.rb
+++ b/spec/dummy/spec/spec_helper.rb
@@ -1,11 +1,93 @@
-ENV['RAILS_ENV'] ||= 'test'
-require File.expand_path('../../config/environment', __FILE__)
-require 'rspec/rails'
-require 'rspec/activerecord/expectations'
-
+# This file was generated by the `rails generate rspec:install` command. Conventionally, all
+# specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.
+# The generated `.rspec` file contains `--require spec_helper` which will cause
+# this file to always be loaded, without a need to explicitly require it in any
+# files.
+#
+# Given that it is always loaded, you are encouraged to keep this file as
+# light-weight as possible. Requiring heavyweight dependencies from this file
+# will add to the boot time of your test suite on EVERY test run, even for an
+# individual file that may not need all of that loaded. Instead, consider making
+# a separate helper file that requires the additional dependencies and performs
+# the additional setup, and require it from the spec files that actually need
+# it.
+#
+# See https://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
 RSpec.configure do |config|
-  config.expect_with(:rspec) {|c| c.syntax = :expect}
+  # rspec-expectations config goes here. You can use an alternate
+  # assertion/expectation library such as wrong or the stdlib/minitest
+  # assertions if you prefer.
+  config.expect_with :rspec do |expectations|
+    # This option will default to `true` in RSpec 4. It makes the `description`
+    # and `failure_message` of custom matchers include text for helper methods
+    # defined using `chain`, e.g.:
+    #     be_bigger_than(2).and_smaller_than(4).description
+    #     # => "be bigger than 2 and smaller than 4"
+    # ...rather than:
+    #     # => "be bigger than 2"
+    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
+  end
+
+  # rspec-mocks config goes here. You can use an alternate test double
+  # library (such as bogus or mocha) by changing the `mock_with` option here.
+  config.mock_with :rspec do |mocks|
+    # Prevents you from mocking or stubbing a method that does not exist on
+    # a real object. This is generally recommended, and will default to
+    # `true` in RSpec 4.
+    mocks.verify_partial_doubles = true
+  end
+
+  # This option will default to `:apply_to_host_groups` in RSpec 4 (and will
+  # have no way to turn it off -- the option exists only for backwards
+  # compatibility in RSpec 3). It causes shared context metadata to be
+  # inherited by the metadata hash of host groups and examples, rather than
+  # triggering implicit auto-inclusion in groups with matching metadata.
+  config.shared_context_metadata_behavior = :apply_to_host_groups
+
+  # The settings below are suggested to provide a good initial experience
+  # with RSpec, but feel free to customize to your heart's content.
+
+  # This allows you to limit a spec run to individual examples or groups
+  # you care about by tagging them with `:focus` metadata. When nothing
+  # is tagged with `:focus`, all examples get run. RSpec also provides
+  # aliases for `it`, `describe`, and `context` that include `:focus`
+  # metadata: `fit`, `fdescribe` and `fcontext`, respectively.
+  config.filter_run_when_matching :focus
+
+  # Allows RSpec to persist some state between runs in order to support
+  # the `--only-failures` and `--next-failure` CLI options. We recommend
+  # you configure your source control system to ignore this file.
+  config.example_status_persistence_file_path = "spec/examples.txt"
+
+  # Limits the available syntax to the non-monkey patched syntax that is
+  # recommended. For more details, see:
+  # https://rspec.info/features/3-12/rspec-core/configuration/zero-monkey-patching-mode/
+  # config.disable_monkey_patching!
+
+  # Many RSpec users commonly either run the entire suite or an individual
+  # file, and it's useful to allow more verbose output when running an
+  # individual spec file.
+  if config.files_to_run.one?
+    # Use the documentation formatter for detailed output,
+    # unless a formatter has already been configured
+    # (e.g. via a command-line flag).
+    config.default_formatter = "doc"
+  end
+
+  # Print the 10 slowest examples and example groups at the
+  # end of the spec run, to help surface which specs are running
+  # particularly slow.
+  config.profile_examples = 10
+
+  # Run specs in random order to surface order dependencies. If you find an
+  # order dependency and want to debug it, you can fix the order by providing
+  # the seed, which is printed after each run.
+  #     --seed 1234
   config.order = :random
 
-  include RSpec::ActiveRecord::Expectations
+  # Seed global randomization in this process using the `--seed` CLI option.
+  # Setting this allows you to use `--seed` to deterministically reproduce
+  # test failures related to randomization by passing the same `--seed` value
+  # as the one that triggered the failure.
+  Kernel.srand config.seed
 end
diff --git a/spec/support/dummy_app.rb b/spec/support/dummy_app.rb
index c205f86f..e2e1554c 100644
--- a/spec/support/dummy_app.rb
+++ b/spec/support/dummy_app.rb
@@ -50,7 +50,7 @@ def start_server
         yield
 
         Process.kill("KILL", out.pid)
-        File.delete("tmp/pids/server.pid")
+        File.delete("tmp/pids/server.pid") if File.exist?("tmp/pids/server.pid")
       end
     end
   end