diff --git a/.github/workflows/rspec.yml b/.github/workflows/rspec.yml
index 19f7552..6cfcbc8 100644
--- a/.github/workflows/rspec.yml
+++ b/.github/workflows/rspec.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        ruby: ["2.7","3.0","3.1","3.2", "3.3"]
+        ruby: ["3.1","3.2","3.3"]
     env:
       BUNDLE_GEMFILE: .github/Gemfile
       MYSQL_HOST: 127.0.0.1
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