diff --git a/Gemfile b/Gemfile
index 787260a..eb46e7a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,29 +1,29 @@
 # frozen_string_literal: true
 
-source "https://rubygems.org"
+source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 # Specify your gem's dependencies in enummer.gemspec.
 gemspec
 
-gem "rubocop-rails"
-gem "bundler-audit"
-gem "standard"
-gem "rails", "~> 7.1.0"
+gem 'bundler-audit'
+gem 'rails', '~> 7.1.0'
+gem 'rubocop-rails'
+gem 'standard'
 
 group :test do
-  gem "simplecov", require: false
-  gem "simplecov-cobertura", require: false
+  gem 'simplecov', require: false
+  gem 'simplecov-cobertura', require: false
 end
 
 group :postgres do
-  gem "pg"
+  gem 'pg'
 end
 
 group :mysql do
-  gem "mysql2"
+  gem 'mysql2'
 end
 
 group :sqlite do
-  gem "sqlite3", "~> 1.4"
+  gem 'sqlite3', '~> 1.4'
 end
diff --git a/Rakefile b/Rakefile
index 33669d1..1df0f4d 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
-require "bundler/setup"
+require 'bundler/setup'
 
-require "bundler/gem_tasks"
+require 'bundler/gem_tasks'
diff --git a/enummer.gemspec b/enummer.gemspec
index 0c8b6b2..4ddd30d 100644
--- a/enummer.gemspec
+++ b/enummer.gemspec
@@ -1,25 +1,26 @@
 # frozen_string_literal: true
 
-require_relative "lib/enummer/version"
+require_relative 'lib/enummer/version'
 
 Gem::Specification.new do |spec|
-  spec.name = "enummer"
+  spec.name = 'enummer'
   spec.version = Enummer::VERSION
-  spec.authors = ["Jamie Schembri"]
-  spec.email = ["jamie@schembri.me"]
-  spec.homepage = "https://github.com/shkm/enummer"
-  spec.summary = "Multi-value enums for Rails."
-  spec.description = "Enummer implements multi-value enums with bitwise operations."
-  spec.license = "MIT"
+  spec.authors = ['Jamie Schembri']
+  spec.email = ['jamie@schembri.me']
+  spec.homepage = 'https://github.com/shkm/enummer'
+  spec.summary = 'Multi-value enums for Rails.'
+  spec.description = 'Enummer implements multi-value enums with bitwise operations.'
+  spec.license = 'MIT'
 
-  spec.metadata["homepage_uri"] = spec.homepage
-  spec.metadata["source_code_uri"] = "https://github.com/shkm/enummer"
-  spec.metadata["changelog_uri"] = "https://github.com/shkm/enummer/CHANGELOG.md"
+  spec.metadata['homepage_uri'] = spec.homepage
+  spec.metadata['source_code_uri'] = 'https://github.com/shkm/enummer'
+  spec.metadata['changelog_uri'] = 'https://github.com/shkm/enummer/CHANGELOG.md'
 
   spec.files = Dir.chdir(File.expand_path(__dir__)) do
-    Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
+    Dir['{app,config,db,lib}/**/*', 'MIT-LICENSE', 'Rakefile', 'README.md']
   end
 
-  spec.required_ruby_version = ">= 3.1"
-  spec.add_dependency "rails", ">= 7.0.0"
+  spec.required_ruby_version = '>= 3.1'
+  spec.add_dependency 'rails', '>= 7.0.0'
+  spec.metadata['rubygems_mfa_required'] = 'true'
 end
diff --git a/lib/enummer.rb b/lib/enummer.rb
index c68755d..3e8777b 100644
--- a/lib/enummer.rb
+++ b/lib/enummer.rb
@@ -2,7 +2,7 @@
 
 module Enummer; end
 
-require "enummer/version"
-require "enummer/enummer_type"
-require "enummer/extension"
-require "enummer/railtie"
+require 'enummer/version'
+require 'enummer/enummer_type'
+require 'enummer/extension'
+require 'enummer/railtie'
diff --git a/lib/enummer/enummer_type.rb b/lib/enummer/enummer_type.rb
index d39e761..7a1e081 100644
--- a/lib/enummer/enummer_type.rb
+++ b/lib/enummer/enummer_type.rb
@@ -1,11 +1,12 @@
 # frozen_string_literal: true
 
-require "active_record/type"
+require 'active_record/type'
 
 module Enummer
   class EnummerType < ::ActiveRecord::Type::Value
     # @param [Array<Symbol>] values hash with bit-value pairs for all possible values for this type
     def initialize(values:)
+      super
       @values = values
     end
 
@@ -13,7 +14,7 @@ def initialize(values:)
     # @example
     #   :enummer[read|write|execute]
     def type
-      :"enummer[#{@values.keys.join("|")}]"
+      :"enummer[#{@values.keys.join('|')}]"
     end
 
     # @param [Symbol|Array<Symbol>] value Current value represented as one or more symbols
@@ -31,7 +32,7 @@ def deserialize(value)
       return [] if value.to_i.zero?
 
       @values.each_with_object([]) do |(pair_name, pair_value), value_names|
-        next if (value & pair_value).zero?
+        next if value.nobits?(pair_value)
 
         value_names << pair_name
       end
diff --git a/lib/enummer/extension.rb b/lib/enummer/extension.rb
index e1c881b..dd86595 100644
--- a/lib/enummer/extension.rb
+++ b/lib/enummer/extension.rb
@@ -2,10 +2,13 @@
 
 module Enummer
   module Extension
-    # @param [Hash] values The attribute name to options mapping for an multi-option enum
-    # @option values [Boolean|String] :_prefix The prefix to give to generated methods. If true, uses the attribute name.
-    # @option values [Boolean|String] :_suffix The suffix to give to generated methods. If true, uses the attribute name.
-    # @example Defining an enummer with a prefix. This would generate `#can_read?`, `#can_read=`, `#can_read!`, `.can_read`, etc.
+    # @param [Hash] values The attribute name to options mapping for a multi-option enum
+    # @option values [Boolean|String] :_prefix The prefix to give to generated methods. If true, uses the
+    #   attribute name.
+    # @option values [Boolean|String] :_suffix The suffix to give to generated methods. If true, uses the
+    #   attribute name.
+    # @example Defining an enummer with a prefix. This would generate `#can_read?`, `#can_read=`, `#can_read!`,
+    #   `.can_read`, etc.
     #   enummer permissions: %i[read write execute], :_prefix: 'can'
     def enummer(values)
       options = {}
@@ -27,7 +30,7 @@ def enummer(values)
 
     def _enummer_build_with_scope(attribute_name, values)
       scope "with_#{attribute_name}", lambda { |desired|
-        expected = Array.wrap(desired).sum(0) { |value| values[value.to_sym] }
+        expected = Array.wrap(desired).sum { |value| values[value.to_sym] }
 
         where("#{attribute_name} & :expected = :expected", expected: expected)
       }
@@ -59,7 +62,7 @@ def _enummer_method_name(attribute_name, value_name, options)
       prefix = _enummer_affix(attribute_name, options[:_prefix])
       suffix = _enummer_affix(attribute_name, options[:_suffix])
 
-      [prefix, value_name, suffix].compact.join("_")
+      [prefix, value_name, suffix].compact.join('_')
     end
 
     def _enummer_affix(attribute_name, value)
diff --git a/lib/enummer/railtie.rb b/lib/enummer/railtie.rb
index b6e58ef..17b4dd6 100644
--- a/lib/enummer/railtie.rb
+++ b/lib/enummer/railtie.rb
@@ -2,7 +2,7 @@
 
 module Enummer
   class Railtie < ::Rails::Railtie
-    initializer "enummer" do
+    initializer 'enummer' do
       ActiveSupport.on_load(:active_record) do
         ActiveRecord::Type.register(:enummer, EnummerType)
         extend Enummer::Extension
diff --git a/lib/enummer/version.rb b/lib/enummer/version.rb
index 9544213..44b925a 100644
--- a/lib/enummer/version.rb
+++ b/lib/enummer/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Enummer
-  VERSION = "1.1.0"
+  VERSION = '1.1.0'
 end
diff --git a/test/enummer_test.rb b/test/enummer_test.rb
index 3c7d8f2..6a86095 100644
--- a/test/enummer_test.rb
+++ b/test/enummer_test.rb
@@ -1,62 +1,62 @@
 # frozen_string_literal: true
 
-require "test_helper"
+require 'test_helper'
 
 class EnummerTest < ActiveSupport::TestCase
   def setup
     @user1 = User.new(permissions: %i[read write execute],
-      facial_features: %i[nose],
-      diets: %i[cigarettes alcohol],
-      transport: %i[submarine],
-      home: %i[box])
+                      facial_features: %i[nose],
+                      diets: %i[cigarettes alcohol],
+                      transport: %i[submarine],
+                      home: %i[box])
     @user2 = User.new(permissions: %i[read write], diets: %i[cigarettes])
     @user3 = User.new(permissions: %i[execute])
 
     [@user1, @user2, @user3].map { |user| user.save && user.reload }
   end
 
-  test "it has a version number" do
+  test 'it has a version number' do
     assert Enummer::VERSION
   end
 
-  test "get list of all valid values" do
+  test 'get list of all valid values' do
     assert_equal %i[read write execute], User.permissions
   end
 
-  test "plain scopes return users with those values set" do
+  test 'plain scopes return users with those values set' do
     assert_equal [@user1, @user2], User.read
     assert_equal [@user1, @user2], User.write
     assert_equal [@user1, @user3], User.execute
   end
 
-  test "with_ scope returns users with all of those bits set" do
+  test 'with_ scope returns users with all of those bits set' do
     assert_equal [@user1], User.with_permissions(%i[execute read write])
     assert_equal [@user1], User.with_permissions(%w[execute read write])
-    assert_equal [@user1, @user2], User.with_permissions(["read", :write])
+    assert_equal [@user1, @user2], User.with_permissions(['read', :write])
     assert_equal [@user1, @user2], User.with_diets(%i[cigarettes])
   end
 
-  test "not scopes return users without those bits set" do
+  test 'not scopes return users without those bits set' do
     assert_equal [@user3], User.not_read
     assert_equal [@user3], User.not_write
     assert_equal [@user2], User.not_execute
   end
 
-  test "it serializes into a numeric" do
+  test 'it serializes into a numeric' do
     assert_equal 3, @user2.permissions_before_type_cast
   end
 
-  test "it deserializes into an array of values" do
+  test 'it deserializes into an array of values' do
     assert_equal %i[read write], @user2.permissions
   end
 
-  test "it generates object query methods" do
+  test 'it generates object query methods' do
     assert @user2.read?
     assert @user2.write?
-    refute @user2.execute?
+    assert_not @user2.execute?
   end
 
-  test "setting a setter to true adds the value" do
+  test 'setting a setter to true adds the value' do
     @user3.read = true
 
     assert_equal %i[execute read], @user3.permissions
@@ -66,7 +66,7 @@ def setup
     assert_equal %i[execute read].sort, @user3.permissions.sort
   end
 
-  test "setting a setter to false removes the value" do
+  test 'setting a setter to false removes the value' do
     @user1.write = false
 
     assert_equal %i[read execute], @user1.permissions
@@ -76,57 +76,57 @@ def setup
     assert_equal %i[read execute].sort, @user1.permissions.sort
   end
 
-  test "setting the attribute with strings adds the values" do
+  test 'setting the attribute with strings adds the values' do
     @user3.update(permissions: %w[read write])
 
     assert_equal %i[read write], @user3.permissions
 
     updated = false
-    callback = lambda { |_name, _start, _finish, _id, payload| updated = true if payload[:sql].starts_with?("UPDATE") }
+    callback = ->(_name, _start, _finish, _id, payload) { updated = true if payload[:sql].starts_with?('UPDATE') }
 
-    ActiveSupport::Notifications.subscribed(callback, "sql.active_record") do
+    ActiveSupport::Notifications.subscribed(callback, 'sql.active_record') do
       @user3.update(permissions: %w[read write])
     end
 
-    refute updated, "subsequent updates with the same values should be idempotent"
+    assert_not updated, 'subsequent updates with the same values should be idempotent'
   end
 
-  test "using a bang method properly updates the persisted field" do
+  test 'using a bang method properly updates the persisted field' do
     @user3.read!
     @user3.reload
 
     assert_equal %i[read execute], @user3.permissions
   end
 
-  test "methods respect _prefix" do
+  test 'methods respect _prefix' do
     assert @user1.facial_features_nose?
-    refute @user1.facial_features_mouth?
-    refute @user1.facial_features_eyes?
+    assert_not @user1.facial_features_mouth?
+    assert_not @user1.facial_features_eyes?
 
     assert @user1.consumes_cigarettes?
     assert @user1.consumes_alcohol?
-    refute @user1.consumes_greens?
+    assert_not @user1.consumes_greens?
   end
 
-  test "update with prefix" do
+  test 'update with prefix' do
     assert @user1.consumes_cigarettes?
-    refute @user1.consumes_greens?
+    assert_not @user1.consumes_greens?
     @user1.update!(consumes_cigarettes: true)
-    refute @user1.consumes_greens?
+    assert_not @user1.consumes_greens?
   end
 
-  test "recognizes boolean params" do
-    @user1.update!(ActionController::Parameters.new({"consumes_cigarettes" => "false"}).permit(:consumes_cigarettes))
-    refute @user1.consumes_cigarettes?
+  test 'recognizes boolean params' do
+    @user1.update!(ActionController::Parameters.new({ 'consumes_cigarettes' => 'false' }).permit(:consumes_cigarettes))
+    assert_not @user1.consumes_cigarettes?
   end
 
-  test "methods respect _suffix" do
-    refute @user1.car_transport?
-    refute @user1.truck_transport?
+  test 'methods respect _suffix' do
+    assert_not @user1.car_transport?
+    assert_not @user1.truck_transport?
     assert @user1.submarine_transport?
 
     assert @user1.box_home?
-    refute @user1.apartment_home?
-    refute @user1.house_home?
+    assert_not @user1.apartment_home?
+    assert_not @user1.house_home?
   end
 end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 2c682a6..60ecf94 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,26 +1,26 @@
 # frozen_string_literal: true
 
-require "simplecov"
+require 'simplecov'
 SimpleCov.start do
   enable_coverage :branch
-  add_filter "/test/dummy/"
+  add_filter '/test/dummy/'
 
-  if ENV["CI"]
-    require "simplecov-cobertura"
+  if ENV['CI']
+    require 'simplecov-cobertura'
     SimpleCov.formatter = SimpleCov::Formatter::CoberturaFormatter
   end
 end
 
 # Configure Rails Environment
-ENV["RAILS_ENV"] = "test"
+ENV['RAILS_ENV'] = 'test'
 
-require_relative "../test/dummy/config/environment"
-ActiveRecord::Migrator.migrations_paths = [File.expand_path("../test/dummy/db/migrate", __dir__)]
-require "rails/test_help"
+require_relative '../test/dummy/config/environment'
+ActiveRecord::Migrator.migrations_paths = [File.expand_path('../test/dummy/db/migrate', __dir__)]
+require 'rails/test_help'
 
 # Load fixtures from the engine
 if ActiveSupport::TestCase.respond_to?(:fixture_path=)
-  ActiveSupport::TestCase.fixture_path = File.expand_path("fixtures", __dir__)
+  ActiveSupport::TestCase.fixture_path = File.expand_path('fixtures', __dir__)
   ActionDispatch::IntegrationTest.fixture_path = ActiveSupport::TestCase.fixture_path
   ActiveSupport::TestCase.file_fixture_path = "#{ActiveSupport::TestCase.fixture_path}/files"
   ActiveSupport::TestCase.fixtures :all