diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a5782e7..90bec94 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,15 +24,40 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
+          - '3.4'
+          - '3.3'
+          - '3.2'
           - '3.1'
           - '3.0'
           - '2.7'
         rails:
+          - "8.1.0"
+          - "8.0.0"
+          - "7.2.0"
+          - "7.1.0"
           - "7.0.0"
           - "6.1.0"
           - "6.0.0"
+        exclude:
+          - rails: "8.1.0"
+            ruby: "3.1"
+          - rails: "8.1.0"
+            ruby: "3.0"
+          - rails: "8.1.0"
+            ruby: "2.7"
+          - rails: "8.0.0"
+            ruby: "3.1"
+          - rails: "8.0.0"
+            ruby: "3.0"
+          - rails: "8.0.0"
+            ruby: "2.7"
+          - rails: "7.2.0"
+            ruby: "3.0"
+          - rails: "7.2.0"
+            ruby: "2.7"
     env:
       APT_DEPS: libsqlite3-dev
+      BUNDLE_WITHOUT: tools benchmarks docs
       RAILS_VERSION: "${{matrix.rails}}"
       RAILS_ENV: test
 
@@ -45,11 +70,6 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: "${{matrix.ruby}}"
-      - name: Install latest bundler
-        run: |
-          gem install bundler --no-document
-          bundle config set without 'tools benchmarks docs'
-      - name: Bundle install
-        run: bundle install --jobs 4 --retry 3
+          bundler-cache: true
       - name: Run all tests
         run: bundle exec rake app:db:reset app:spec
diff --git a/Gemfile b/Gemfile
index 68879f1..6f0cb44 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 gemspec
 
-RAILS_VERSION = ENV.fetch("RAILS_VERSION", '7.0.4').freeze
+RAILS_VERSION = ENV.fetch("RAILS_VERSION", '8.1.0').freeze
 
 %w(railties actionview actionpack activerecord).each do |name|
   gem name, "~> #{RAILS_VERSION}"
@@ -38,4 +38,7 @@ group :test do
   gem 'generator_spec'
   gem 'rack-test'
   gem 'rspec-rails', '~> 3.1'
+  gem 'mutex_m'
+  gem 'base64'
+  gem 'drb'
 end
diff --git a/rom-rails.gemspec b/rom-rails.gemspec
index 726158b..61ed058 100644
--- a/rom-rails.gemspec
+++ b/rom-rails.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
 
   spec.add_runtime_dependency 'addressable', '~> 2.3'
   spec.add_runtime_dependency 'dry-core', '~> 1.0'
-  spec.add_runtime_dependency 'railties', '>= 6.0', '< 8.0.0'
+  spec.add_runtime_dependency 'railties', '>= 6.0', '< 8.2.0'
   spec.add_runtime_dependency 'rom', '~> 5.3'
 
   spec.add_development_dependency "bundler"
diff --git a/spec/dummy/config/application.rb b/spec/dummy/config/application.rb
index e482e32..2bab005 100644
--- a/spec/dummy/config/application.rb
+++ b/spec/dummy/config/application.rb
@@ -1,5 +1,6 @@
 require File.expand_path('../boot', __FILE__)
 
+require 'logger'
 require 'action_controller/railtie'
 
 Bundler.setup(:default, Rails.env)