diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 55ec56b..4994ebb 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -26,15 +26,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        gemfile: ['5.2', '6.0', '6.1', '7.0']
-        ruby-version: ['2.6', '2.7', '3.0']
-        exclude:
-          - gemfile: '5.2'
-            ruby-version: '2.7'
-          - gemfile: '5.2'
-            ruby-version: '3.0'
-          - gemfile: '7.0'
-            ruby-version: '2.6'
+        gemfile: ['7.0', '7.1']
+        ruby-version: ['3.1', '3.2']
 
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
diff --git a/.gitignore b/.gitignore
index a23586f..bcec2c9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 Gemfile.lock
 gemfiles/*.lock
+TAGS
diff --git a/.rubocop.yml b/.rubocop.yml
new file mode 100644
index 0000000..72c675b
--- /dev/null
+++ b/.rubocop.yml
@@ -0,0 +1,22 @@
+# .rubocop.yml
+
+# We want Exclude directives from different
+# config files to get merged, not overwritten
+inherit_mode:
+  merge:
+    - Exclude
+
+require:
+  - standard
+  - standard-custom
+  - standard-performance
+  - rubocop-performance
+
+inherit_gem:
+  standard: config/base.yml
+  standard-performance: config/base.yml
+  standard-custom: config/base.yml
+
+AllCops:
+  SuggestExtensions: false
+  TargetRubyVersion: 3.2
diff --git a/Appraisals b/Appraisals
index d2e1878..08bed7a 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,19 +1,24 @@
-appraise '5.2' do
-  gem 'activerecord', '~> 5.2.0'
-  gem 'mysql2', '~> 0.4.0'
+appraise "5.2" do
+  gem "activerecord", "~> 5.2.0"
+  gem "mysql2", "~> 0.4.0"
 end
 
-appraise '6.0' do
-  gem 'activerecord', '~> 6.0.3.3'
-  gem 'mysql2', '~> 0.4.0'
+appraise "6.0" do
+  gem "activerecord", "~> 6.0.3.3"
+  gem "mysql2", "~> 0.4.0"
 end
 
-appraise '6.1' do
-  gem 'activerecord', '~> 6.1.0'
-  gem 'mysql2', '~> 0.5.3'
+appraise "6.1" do
+  gem "activerecord", "~> 6.1.0"
+  gem "mysql2", "~> 0.5.3"
 end
 
-appraise '7.0' do
-  gem 'activerecord', '~> 7.0.0'
-  gem 'mysql2', '~> 0.5.3'
+appraise "7.0" do
+  gem "activerecord", "~> 7.0.0"
+  gem "mysql2", "~> 0.5.3"
+end
+
+appraise "7.1" do
+  gem "activerecord", "~> 7.1.0"
+  gem "mysql2", "~> 0.5.5"
 end
diff --git a/Gemfile b/Gemfile
index ed85cba..b7bbf0d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source 'https://rubygems.org'
+source "https://rubygems.org"
 gemspec
 
-gem 'appraisal'
+gem "appraisal"
diff --git a/Rakefile b/Rakefile
index 8280b5f..c439f7a 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,6 +1,6 @@
-desc 'Run tests'
+desc "Run tests"
 task :test do |t|
-  sh 'rspec spec'
+  sh "rspec spec"
 end
 
-task :default => :test
+task default: :test
diff --git a/gemfiles/.bundle/config b/gemfiles/.bundle/config
new file mode 100644
index 0000000..c127f80
--- /dev/null
+++ b/gemfiles/.bundle/config
@@ -0,0 +1,2 @@
+---
+BUNDLE_RETRY: "1"
diff --git a/gemfiles/6.0.gemfile b/gemfiles/6.0.gemfile
deleted file mode 100644
index c12d399..0000000
--- a/gemfiles/6.0.gemfile
+++ /dev/null
@@ -1,9 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "appraisal"
-gem "activerecord", "~> 6.0.3.3"
-gem "mysql2", "~> 0.4.0"
-
-gemspec path: "../"
diff --git a/gemfiles/6.1.gemfile b/gemfiles/6.1.gemfile
deleted file mode 100644
index 07b476c..0000000
--- a/gemfiles/6.1.gemfile
+++ /dev/null
@@ -1,9 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "appraisal"
-gem "activerecord", "~> 6.1.0"
-gem "mysql2", "~> 0.5.3"
-
-gemspec path: "../"
diff --git a/gemfiles/5.2.gemfile b/gemfiles/7.1.gemfile
similarity index 65%
rename from gemfiles/5.2.gemfile
rename to gemfiles/7.1.gemfile
index 94fe48e..e870846 100644
--- a/gemfiles/5.2.gemfile
+++ b/gemfiles/7.1.gemfile
@@ -3,7 +3,7 @@
 source "https://rubygems.org"
 
 gem "appraisal"
-gem "activerecord", "~> 5.2.0"
-gem "mysql2", "~> 0.4.0"
+gem "activerecord", "~> 7.1.0"
+gem "mysql2", "~> 0.5.5"
 
 gemspec path: "../"
diff --git a/lib/seeder/version.rb b/lib/seeder/version.rb
index 258f28b..1534f8c 100644
--- a/lib/seeder/version.rb
+++ b/lib/seeder/version.rb
@@ -1,3 +1,3 @@
 class Seeder
-  VERSION = '1.4.0'
+  VERSION = "1.5.0"
 end
diff --git a/seeder.gemspec b/seeder.gemspec
index 6814a09..d62e01f 100644
--- a/seeder.gemspec
+++ b/seeder.gemspec
@@ -1,5 +1,4 @@
-# -*- encoding: utf-8 -*-
-require 'rubygems' unless defined? Gem
+require "rubygems" unless defined? Gem
 require File.dirname(__FILE__) + "/lib/seeder/version"
 
 Gem::Specification.new do |s|
@@ -13,11 +12,12 @@ Gem::Specification.new do |s|
   s.required_rubygems_version = ">= 1.3.6"
   s.files = `git ls-files`.split("\n")
   s.extra_rdoc_files = ["README.md", "LICENSE.txt"]
-  s.license = 'MIT'
+  s.license = "MIT"
 
-  s.add_dependency('activerecord', '>= 5.2', '< 7.1')
+  s.add_dependency("activerecord", ">= 5.2", "< 7.2")
 
-  s.add_development_dependency('mysql2', '>= 0.4.4', '< 0.6.0')
-  s.add_development_dependency('rspec', '~> 3.0')
-  s.add_development_dependency('rake', '>= 10.4')
+  s.add_development_dependency("mysql2", ">= 0.4.4", "< 0.6.0")
+  s.add_development_dependency("rspec", "~> 3.0")
+  s.add_development_dependency("rake", ">= 10.4")
+  s.add_development_dependency("standard")
 end
diff --git a/spec/seeder_spec.rb b/spec/seeder_spec.rb
index 849a7b2..4f8b2c2 100644
--- a/spec/seeder_spec.rb
+++ b/spec/seeder_spec.rb
@@ -1,19 +1,19 @@
-require 'spec_helper'
+require "spec_helper"
 
 describe Seeder do
   before(:each) { Grade.delete_all }
 
   let(:seeder) do
     Seeder.new(
-      [{ 'student_id' => 1, 'course_id' => 1, 'grade' => 90 },
-       { 'student_id' => 1, 'course_id' => 2, 'grade' => 80 }],
+      [{"student_id" => 1, "course_id" => 1, "grade" => 90},
+        {"student_id" => 1, "course_id" => 2, "grade" => 80}],
       %w[student_id course_id],
       Grade
     )
   end
 
-  describe '.create' do
-    it 'should call create on a new instance' do
+  describe ".create" do
+    it "should call create on a new instance" do
       seeder = double
       expect(Seeder).to receive(:new).with(:data, :keys, :model)
         .and_return(seeder)
@@ -23,39 +23,39 @@
     end
   end
 
-  describe '#new' do
+  describe "#new" do
     specify { expect(seeder.model).to eq Grade }
     specify { expect(seeder.keys).to eq [:student_id, :course_id] }
     specify do
       expect(seeder.data).to eq(
-        [{ student_id: 1, course_id: 1, grade: 90 },
-         { student_id: 1, course_id: 2, grade: 80 }]
+        [{student_id: 1, course_id: 1, grade: 90},
+          {student_id: 1, course_id: 2, grade: 80}]
       )
     end
   end
 
-  describe '#delete_outdated_records' do
+  describe "#delete_outdated_records" do
     before do
       Grade.create!(student_id: 1, course_id: 3)
       Grade.create!(student_id: 1, course_id: 1)
     end
 
-    it 'should delete outdated records' do
+    it "should delete outdated records" do
       expect { seeder.delete_outdated_records }.to change { Grade.count }.to(1)
       expect(Grade.first.course_id).to eq 1
     end
   end
 
-  describe '#update_existing_records' do
+  describe "#update_existing_records" do
     let!(:existing_grade) { Grade.create!(student_id: 1, course_id: 1) }
 
-    it 'should delete outdated records' do
+    it "should delete outdated records" do
       expect { seeder.update_existing_records }
         .to change { existing_grade.reload.grade }.to(90)
     end
   end
 
-  describe '#create_new_records' do
+  describe "#create_new_records" do
     let!(:existing_grade) { Grade.create!(student_id: 1, course_id: 1) }
 
     it 'should create new records when there are no existing records with
@@ -65,15 +65,15 @@
     end
   end
 
-  describe '#create' do
-    it 'calls the delete, update and create methods in order' do
+  describe "#create" do
+    it "calls the delete, update and create methods in order" do
       expect(seeder).to receive(:delete_outdated_records).ordered
       expect(seeder).to receive(:update_existing_records).ordered
       expect(seeder).to receive(:create_new_records).ordered
       seeder.create
     end
 
-    it 'aborts when an exception is raised' do
+    it "aborts when an exception is raised" do
       allow(seeder)
         .to receive(:create_new_records)
         .and_raise(ActiveRecord::RecordInvalid.new(Grade.new))
@@ -84,7 +84,7 @@
       expect(Grade.all.map(&:attributes)).to eq(initial_attributes)
     end
 
-    it 'produces the appropriate results' do
+    it "produces the appropriate results" do
       grade1 = Grade.create!(student_id: 1, course_id: 3)
       grade2 = Grade.create!(student_id: 1, course_id: 1)
 
@@ -104,5 +104,4 @@
       expect(grade3.grade).to eq(80)
     end
   end
-
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index acc3913..2f87023 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,13 +1,13 @@
-require 'active_record'
-require 'seeder'
+require "active_record"
+require "seeder"
 
 ActiveRecord::Base.establish_connection(
-  adapter: 'mysql2',
-  database: ENV.fetch('DB_NAME', 'polymorpheus_test'),
-  host: ENV.fetch('DB_HOST', '127.0.0.1'),
-  password: ENV.fetch('DB_PASSWORD', ''),
-  port: ENV.fetch('DB_PORT', '3306'),
-  username: ENV.fetch('DB_USERNAME', 'root')
+  adapter: "mysql2",
+  database: ENV.fetch("DB_NAME", "polymorpheus_test"),
+  host: ENV.fetch("DB_HOST", "127.0.0.1"),
+  password: ENV.fetch("DB_PASSWORD", ""),
+  port: ENV.fetch("DB_PORT", "3306"),
+  username: ENV.fetch("DB_USERNAME", "root")
 )
 
 RSpec.configure do |config|
diff --git a/spec/support/active_record/connection_adapters/abstract_mysql_adapter.rb b/spec/support/active_record/connection_adapters/abstract_mysql_adapter.rb
index 51129c3..95d5ecc 100644
--- a/spec/support/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/spec/support/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -1,8 +1,8 @@
 # Patch support for MySQL 5.7+ onto ActiveRecord < 4.1.
 if ActiveRecord::VERSION::MAJOR < 4 ||
-   (ActiveRecord::VERSION::MAJOR == 4 && ActiveRecord::VERSION::MINOR < 1)
+    (ActiveRecord::VERSION::MAJOR == 4 && ActiveRecord::VERSION::MINOR < 1)
 
-  require 'active_record/connection_adapters/abstract_mysql_adapter'
+  require "active_record/connection_adapters/abstract_mysql_adapter"
   class ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter
     NATIVE_DATABASE_TYPES[:primary_key] = "int(11) auto_increment PRIMARY KEY"
   end