diff --git a/.github/Gemfile b/.github/Gemfile
index c06a9c2..a02c547 100644
--- a/.github/Gemfile
+++ b/.github/Gemfile
@@ -1,8 +1,3 @@
 source 'https://rubygems.org'
 
-if RUBY_VERSION < '3.0'
-  gem 'activerecord', '~> 7.1.1'
-  gem 'activesupport', '~> 7.1.1'
-end
-
 gemspec :path => '../'
diff --git a/.github/workflows/rspec.yml b/.github/workflows/rspec.yml
index d2fce9b..6cfcbc8 100644
--- a/.github/workflows/rspec.yml
+++ b/.github/workflows/rspec.yml
@@ -17,14 +17,14 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        ruby: ["2.7","3.0","3.1","3.2"]
+        ruby: ["3.1","3.2","3.3"]
     env:
       BUNDLE_GEMFILE: .github/Gemfile
       MYSQL_HOST: 127.0.0.1
       RAILS_ENV: test
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup ruby
         uses: ruby/setup-ruby@v1
         with:
diff --git a/octoball.gemspec b/octoball.gemspec
index f6be2f6..6f17172 100644
--- a/octoball.gemspec
+++ b/octoball.gemspec
@@ -15,14 +15,14 @@ Gem::Specification.new do |s|
   s.homepage    = 'https://github.com/aktsk/octoball'
   s.require_paths = ['lib']
 
-  s.required_ruby_version = '>= 2.7.0'
+  s.required_ruby_version = '>= 3.1.0'
 
-  s.add_dependency 'activerecord', '>= 6.1'
-  s.add_dependency 'activesupport', '>= 6.1'
+  s.add_dependency 'activerecord', '>= 7.0'
+  s.add_dependency 'activesupport', '>= 7.0'
 
   s.add_development_dependency 'mysql2'
   s.add_development_dependency 'rake'
   s.add_development_dependency 'rspec', '>= 3'
   s.add_development_dependency 'rubocop'
-  s.add_development_dependency 'byebug'
+  s.add_development_dependency 'debug'
 end