diff --git a/.github/workflows/checkstyle.yml b/.github/workflows/checkstyle.yml
index c0a3f005..dab9a8dd 100644
--- a/.github/workflows/checkstyle.yml
+++ b/.github/workflows/checkstyle.yml
@@ -24,9 +24,11 @@ jobs:
       - name: Set up Ruby ${{ matrix.ruby-version }}
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
-          bundler: 1
+          ruby-version: 3.2
           bundler-cache: true
 
+      - name: Install rubocop
+        run: gem install rubocop -v "~>1.63"
+
       - name: Run rubocop
-        run: bundle exec rubocop --parallel --fail-level R
+        run: rubocop --parallel --fail-level R
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index dc4822d3..ee9e1156 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,6 +18,7 @@ jobs:
     timeout-minutes: 15
 
     strategy:
+      fail-fast: false
       matrix:
         ruby-version: [2.3, 2.4, 2.5, 2.6, 2.7, 3.0, 3.1, 3.2, 3.3]
 
@@ -38,9 +39,9 @@ jobs:
       - uses: actions/cache@v4
         with:
           path: vendor/bundle
-          key: ${{ runner.os }}-bundle-${{ matrix.ruby-version }}-v2-${{ hashFiles('rails-data-migrations.gemspec', 'Appraisals') }}
+          key: ${{ runner.os }}-bundle-${{ matrix.ruby-version }}-v3-${{ hashFiles('rails-data-migrations.gemspec', 'Appraisals') }}
           restore-keys: |
-            ${{ runner.os }}-bundle-${{ matrix.ruby-version }}-v2-
+            ${{ runner.os }}-bundle-${{ matrix.ruby-version }}-v3-
 
       - name: Install dependencies
         run: |
diff --git a/.gitignore b/.gitignore
index d00b8694..1ea4d7a2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,4 +10,5 @@
 /.idea/
 spec/db/
 gemfiles/
+vendor/
 *.gem
\ No newline at end of file
diff --git a/.rubocop.yml b/.rubocop.yml
index df2edfa7..408b2d84 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -2,8 +2,12 @@ AllCops:
   Exclude:
     - 'vendor/**/*'
     - 'gemfiles/**/*'
+  TargetRubyVersion: 2.7
 
-Layout/TrailingBlankLines:
+Gemspec/RequiredRubyVersion:
+  Enabled: false
+
+Layout/TrailingEmptyLines:
   Enabled: false
 
 Metrics/BlockLength:
@@ -12,8 +16,15 @@ Metrics/BlockLength:
 Metrics/LineLength:
   Max: 120
 
+Naming/FileName:
+  Exclude:
+    - lib/rails-data-migrations.rb
+
 Style/Documentation:
   Enabled: false
 
+Style/HashSyntax:
+  Enabled: false
+
 Style/NumericLiterals:
   Enabled: false
diff --git a/Appraisals b/Appraisals
index cd62312d..f619e28b 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 ruby_version = Gem::Version.new(RUBY_VERSION)
 
 if ruby_version < Gem::Version.new('2.7.0')
@@ -18,19 +20,23 @@ if ruby_version < Gem::Version.new('3.0.0')
 
   appraise 'rails-5.1' do
     gem 'rails', '~> 5.1.0'
+    gem 'sqlite3', '~> 1.3.6'
   end
 
   appraise 'rails-5.2' do
     gem 'rails', '~> 5.2.0'
+    gem 'sqlite3', '~> 1.3.6'
   end
 end
 
 if ruby_version >= Gem::Version.new('2.5.0')
   appraise 'rails-6.0' do
     gem 'rails', '~> 6.0.0'
+    gem 'sqlite3', '~> 1.4.0'
   end
 
   appraise 'rails-6.1' do
     gem 'rails', '~> 6.1.0'
+    gem 'sqlite3', '~> 1.4.0'
   end
 end
diff --git a/Gemfile b/Gemfile
index a1cee85f..98c5fb20 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in activerecord-data-migrations.gemspec
diff --git a/Rakefile b/Rakefile
index 4c774a2b..82bb534a 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
 
diff --git a/lib/active_record/data_migration.rb b/lib/active_record/data_migration.rb
index ee163b14..2bcc5539 100644
--- a/lib/active_record/data_migration.rb
+++ b/lib/active_record/data_migration.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails/version'
 
 module ActiveRecord
diff --git a/lib/generators/data_migration_generator.rb b/lib/generators/data_migration_generator.rb
index 231125e5..617341bb 100644
--- a/lib/generators/data_migration_generator.rb
+++ b/lib/generators/data_migration_generator.rb
@@ -1,8 +1,10 @@
+# frozen_string_literal: true
+
 require 'rails/generators'
 require 'rails-data-migrations'
 
 class DataMigrationGenerator < Rails::Generators::NamedBase
-  source_root File.expand_path('../templates', __FILE__)
+  source_root File.expand_path('templates', __dir__)
 
   def create_migration_file
     migration_file_name =
diff --git a/lib/generators/templates/data_migration_generator.rb b/lib/generators/templates/data_migration_generator.rb
index 35cd9e88..6d13e10a 100644
--- a/lib/generators/templates/data_migration_generator.rb
+++ b/lib/generators/templates/data_migration_generator.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ClassName < ActiveRecord::DataMigration
   def up
     # put your code here
diff --git a/lib/rails-data-migrations.rb b/lib/rails-data-migrations.rb
index ef612e39..8eae380d 100644
--- a/lib/rails-data-migrations.rb
+++ b/lib/rails-data-migrations.rb
@@ -1,4 +1,5 @@
-# rubocop:disable Naming/FileName
+# frozen_string_literal: true
+
 require 'rails'
 require 'active_record'
 require 'active_record/data_migration'
@@ -6,4 +7,3 @@
 require 'rails_data_migrations/log_entry'
 require 'rails_data_migrations/migrator'
 require 'rails_data_migrations/railtie'
-# rubocop:enable Naming/FileName
diff --git a/lib/rails_data_migrations/log_entry.rb b/lib/rails_data_migrations/log_entry.rb
index 3b90c97d..0fa1b0b1 100644
--- a/lib/rails_data_migrations/log_entry.rb
+++ b/lib/rails_data_migrations/log_entry.rb
@@ -1,8 +1,10 @@
+# frozen_string_literal: true
+
 module RailsDataMigrations
   class LogEntry < ::ActiveRecord::SchemaMigration
     class << self
       def table_name
-        ActiveRecord::Base.table_name_prefix + 'data_migrations' + ActiveRecord::Base.table_name_suffix
+        "#{ActiveRecord::Base.table_name_prefix}data_migrations#{ActiveRecord::Base.table_name_suffix}"
       end
 
       def index_name
diff --git a/lib/rails_data_migrations/migrator.rb b/lib/rails_data_migrations/migrator.rb
index 7725e4e2..1234fcf1 100644
--- a/lib/rails_data_migrations/migrator.rb
+++ b/lib/rails_data_migrations/migrator.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module RailsDataMigrations
   class Migrator < ::ActiveRecord::Migrator
     MIGRATOR_SALT = 2053462855
@@ -61,7 +63,7 @@ def list_pending_migrations
           already_migrated = get_all_versions
           list_migrations.reject { |m| already_migrated.include?(m.version) }
         else
-          open(migrations_path).pending_migrations
+          open(migrations_path).pending_migrations # rubocop:disable Security/Open
         end
       end
 
diff --git a/lib/rails_data_migrations/railtie.rb b/lib/rails_data_migrations/railtie.rb
index c6cb88b1..9df6582b 100644
--- a/lib/rails_data_migrations/railtie.rb
+++ b/lib/rails_data_migrations/railtie.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails'
 
 module RailsDataMigrations
diff --git a/lib/rails_data_migrations/version.rb b/lib/rails_data_migrations/version.rb
index 9201e431..9cf916d0 100644
--- a/lib/rails_data_migrations/version.rb
+++ b/lib/rails_data_migrations/version.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module RailsDataMigrations
-  VERSION = '1.2.0'.freeze
+  VERSION = '1.2.0'
 end
diff --git a/lib/tasks/data_migrations.rake b/lib/tasks/data_migrations.rake
index 65a654e2..0f4286e9 100644
--- a/lib/tasks/data_migrations.rake
+++ b/lib/tasks/data_migrations.rake
@@ -1,8 +1,11 @@
+# frozen_string_literal: true
+
 require 'rake'
 
 namespace :data do
   def apply_single_migration(direction, version)
     raise 'VERSION is required' unless version
+
     RailsDataMigrations::Migrator.run_migration(
       direction,
       RailsDataMigrations::Migrator.migrations_path,
@@ -42,7 +45,8 @@ namespace :data do
     desc 'Skip single data migration using VERSION'
     task skip: :init_migration do
       version = ENV['VERSION'].to_i
-      raise 'VERSION is required' unless version > 0
+      raise 'VERSION is required' unless version.positive?
+
       if RailsDataMigrations::LogEntry.where(version: version).any?
         puts "data migration #{version} was already applied."
       else
diff --git a/rails-data-migrations.gemspec b/rails-data-migrations.gemspec
index af1a0c2a..1d65ad62 100644
--- a/rails-data-migrations.gemspec
+++ b/rails-data-migrations.gemspec
@@ -1,4 +1,6 @@
-lib = File.expand_path('../lib', __FILE__)
+# frozen_string_literal: true
+
+lib = File.expand_path('lib', __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'rails_data_migrations/version'
 
@@ -17,12 +19,11 @@ Gem::Specification.new do |spec|
   end
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
+  spec.required_ruby_version = '>= 2.3'
 
   spec.add_runtime_dependency 'rails', '>= 4.0.0'
 
   spec.add_development_dependency 'appraisal', '~> 2.1'
   spec.add_development_dependency 'rake', '>= 12.3.3'
   spec.add_development_dependency 'rspec', '3.5.0'
-  spec.add_development_dependency 'rubocop', '0.52.1'
-  spec.add_development_dependency 'sqlite3', '~> 1.3.6'
 end
diff --git a/spec/data_migrations_spec.rb b/spec/data_migrations_spec.rb
index 5f02138f..62fa716f 100644
--- a/spec/data_migrations_spec.rb
+++ b/spec/data_migrations_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe RailsDataMigrations do
@@ -44,7 +46,7 @@
     end
 
     def load_rake_rasks
-      load File.expand_path('../../lib/tasks/data_migrations.rake', __FILE__)
+      load File.expand_path('../lib/tasks/data_migrations.rake', __dir__)
       Rake::Task.define_task(:environment)
     end
 
diff --git a/spec/generators/data_migration_generator_spec.rb b/spec/generators/data_migration_generator_spec.rb
deleted file mode 100644
index e69de29b..00000000
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index a1a9d5b6..39825a10 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,7 +1,9 @@
+# frozen_string_literal: true
+
 require 'rails/generators'
 require 'rake'
 
-$LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
+$LOAD_PATH.unshift File.expand_path('../lib', __dir__)
 require 'rails-data-migrations'
 
 ActiveRecord::Base.establish_connection adapter: 'sqlite3', database: ':memory:'