diff --git a/.circleci/config.yml b/.circleci/config.yml
index 4fe63d1..210320c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,7 +3,7 @@ version: 2.1
 aliases:
   - &coditsu
     docker:
-      - image: circleci/ruby:2.6.5
+      - image: cimg/ruby:3.2
     steps:
       - setup_remote_docker
       - checkout
@@ -15,30 +15,24 @@ aliases:
             -e CODITSU_API_SECRET \
             -e CODITSU_REPOSITORY_ID \
             --volumes-from sources coditsu/coditsu:latest
-  - &rails-5
-    environment:
-      BUNDLE_GEMFILE: gemfiles/rails_5.gemfile
   - &rails-6
     environment:
       BUNDLE_GEMFILE: gemfiles/rails_6.gemfile
   - &rails-7
     environment:
       BUNDLE_GEMFILE: gemfiles/rails_7.gemfile
-  - &ruby-2_4_9
-    docker:
-    - image: circleci/ruby:2.4.9
-  - &ruby-2_5_7
-    docker:
-    - image: circleci/ruby:2.5.7
-  - &ruby-2_6_5
-    docker:
-    - image: circleci/ruby:2.6.5
   - &ruby-2_7
     docker:
-    - image: circleci/ruby:2.7
+    - image: cimg/ruby:2.7
   - &ruby-3_0
     docker:
-    - image: circleci/ruby:3.0
+    - image: cimg/ruby:3.0
+  - &ruby-3_1
+    docker:
+      - image: cimg/ruby:3.1
+  - &ruby-3_2
+    docker:
+      - image: cimg/ruby:3.2
   - &job-defaults
     steps:
       - checkout
@@ -48,32 +42,8 @@ aliases:
 
 jobs:
   coditsu:
-    <<: *rails-5
+    <<: *rails-7
     <<: *coditsu
-  ruby-2_4_9-rails-5:
-    <<: *ruby-2_4_9
-    <<: *rails-5
-    <<: *job-defaults
-  ruby-2_5_7-rails-5:
-    <<: *ruby-2_5_7
-    <<: *rails-5
-    <<: *job-defaults
-  ruby-2_5_7-rails-6:
-    <<: *ruby-2_5_7
-    <<: *rails-6
-    <<: *job-defaults
-  ruby-2_6_5-rails-5:
-    <<: *ruby-2_6_5
-    <<: *rails-5
-    <<: *job-defaults
-  ruby-2_6_5-rails-6:
-    <<: *ruby-2_6_5
-    <<: *rails-6
-    <<: *job-defaults
-  ruby-2_7-rails-5:
-    <<: *ruby-2_7
-    <<: *rails-5
-    <<: *job-defaults
   ruby-2_7-rails-6:
     <<: *ruby-2_7
     <<: *rails-6
@@ -86,16 +56,22 @@ jobs:
     <<: *ruby-3_0
     <<: *rails-7
     <<: *job-defaults
+  ruby-3_1-rails-7:
+    <<: *ruby-3_1
+    <<: *rails-7
+    <<: *job-defaults
+  ruby-3_2-rails-7:
+    <<: *ruby-3_2
+    <<: *rails-7
+    <<: *job-defaults
 workflows:
   main:
     jobs:
-      - coditsu
-      - ruby-2_4_9-rails-5
-      - ruby-2_5_7-rails-5
-      - ruby-2_5_7-rails-6
-      - ruby-2_6_5-rails-5
-      - ruby-2_6_5-rails-6
-      - ruby-2_7-rails-5
+      - coditsu:
+          context:
+            - coditsu
       - ruby-2_7-rails-6
       - ruby-3_0-rails-6
       - ruby-3_0-rails-7
+      - ruby-3_1-rails-7
+      - ruby-3_2-rails-7
diff --git a/Appraisals b/Appraisals
index 7d3cf4f..316949e 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,11 +1,11 @@
 # frozen_string_literal: true
 
-appraise 'rails-5' do
-  gem 'rails', '~> 5.0'
+appraise 'rails-6' do
+  gem 'rails', '~> 6.0'
   gem 'rspec-rails'
 end
 
-appraise 'rails-6' do
-  gem 'rails', '~> 6.0'
+appraise 'rails-7' do
+  gem 'rails', '~> 7.0'
   gem 'rspec-rails'
 end
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fcfd4ba..1478da9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 ## master
 
+**BREAKING CHANGES:**
+
+- [#259](https://github.com/castle/castle-ruby/pull/259)
+  - Drop support for Rubies < 2.7 and Rails < 6
+  - Add Rubies 3.1 and 3.2 to test matrix
+  - Add Rails 7 to test matrix
+
 ## 7.2.0
 
 - [#253](https://github.com/castle/castle-ruby/pull/253)
diff --git a/castle-rb.gemspec b/castle-rb.gemspec
index 27df7f5..28bdc6c 100644
--- a/castle-rb.gemspec
+++ b/castle-rb.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
   s.test_files = Dir['spec/**/*']
   s.require_paths = ['lib']
 
-  s.required_ruby_version = '>= 2.4'
+  s.required_ruby_version = '>= 2.7'
 
   s.add_development_dependency 'appraisal'
 end
diff --git a/gemfiles/rails_5.gemfile b/gemfiles/rails_5.gemfile
deleted file mode 100644
index 1649198..0000000
--- a/gemfiles/rails_5.gemfile
+++ /dev/null
@@ -1,24 +0,0 @@
-# frozen_string_literal: true
-
-# This file was generated by Appraisal
-
-source 'https://rubygems.org'
-
-gem 'rack'
-gem 'rails', '~> 5.0'
-gem 'rake'
-
-group :development, :test do
-  gem 'byebug'
-end
-
-group :test do
-  gem 'coveralls_reborn'
-  gem 'rspec'
-  gem 'rspec-rails'
-  gem 'simplecov'
-  gem 'timecop'
-  gem 'webmock'
-end
-
-gemspec path: '../'