diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index a2d4b05..bed7e61 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,20 +13,17 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '2.6'
-          - '2.7'
+          - '3.3'
         gemfile:
-          - gemfiles/rails_5.1_active_admin_1.x.gemfile
-          - gemfiles/rails_5.x_active_admin_1.x.gemfile
-          - gemfiles/rails_5.x_active_admin_2.x.gemfile
           - gemfiles/rails_6.x_active_admin_2.x.gemfile
+          - gemfiles/rails_6.x_active_admin_3.x.gemfile
+          - gemfiles/rails_7.x_active_admin_3.x.gemfile
+          - gemfiles/rails_8.x_active_admin_3.x.gemfile
         include:
-          - ruby-version: '3.0'
-            gemfile: gemfiles/rails_6.x_active_admin_2.x.gemfile
-          - ruby-version: '3.0'
-            gemfile: gemfiles/rails_6.x_active_admin_3.x.gemfile
-          - ruby-version: '3.0'
+          - ruby-version: '4.0'
             gemfile: gemfiles/rails_7.x_active_admin_3.x.gemfile
+          - ruby-version: '4.0'
+            gemfile: gemfiles/rails_8.x_active_admin_3.x.gemfile
 
     env:
       BUNDLE_GEMFILE: ${{ matrix.gemfile }}
diff --git a/Appraisals b/Appraisals
index 086d5fe..a8e950d 100644
--- a/Appraisals
+++ b/Appraisals
@@ -16,14 +16,21 @@ end
 appraise 'rails-6.x-active-admin-2.x' do
   gem 'rails', '~> 6.1'
   gem 'activeadmin', '~> 2.0'
+  gem 'sqlite3', '~> 1.4'
 end
 
 appraise 'rails-6.x-active-admin-3.x' do
   gem 'rails', '~> 6.1'
   gem 'activeadmin', '~> 3.0'
+  gem 'sqlite3', '~> 1.4'
 end
 
 appraise 'rails-7.x-active-admin-3.x' do
   gem 'rails', '~> 7.1'
   gem 'activeadmin', '~> 3.0'
 end
+
+appraise 'rails-8.x-active-admin-3.x' do
+  gem 'rails', '~> 8.0'
+  gem 'activeadmin', '~> 3.0'
+end
diff --git a/activeadmin-searchable_select.gemspec b/activeadmin-searchable_select.gemspec
index 664bd4f..3cf494b 100644
--- a/activeadmin-searchable_select.gemspec
+++ b/activeadmin-searchable_select.gemspec
@@ -14,20 +14,19 @@ Gem::Specification.new do |spec|
   spec.files         = `git ls-files -z`.split("\x0")
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = ['>= 2.1', '< 4']
+  spec.required_ruby_version = '>= 3.0'
 
-  spec.add_development_dependency 'bundler', ['>= 1.5', '< 3']
+  spec.add_development_dependency 'bundler', '>= 1.5'
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'appraisal', '~> 2.2'
-  spec.add_development_dependency 'rspec-rails', '~> 3.6'
+  spec.add_development_dependency 'rspec-rails', '>= 3.6'
   spec.add_development_dependency 'combustion', '~> 1.0'
   spec.add_development_dependency 'database_cleaner-active_record', '~> 2.1'
-  spec.add_development_dependency 'sqlite3', '~> 1.3'
+  spec.add_development_dependency 'sqlite3', '>= 1.3'
 
   spec.add_development_dependency 'capybara', '~> 3.9'
   spec.add_development_dependency 'puma', '~> 5.0'
-  spec.add_development_dependency 'selenium-webdriver', '~> 4.1'
-  spec.add_development_dependency 'webdrivers', '= 5.3.0'
+  spec.add_development_dependency 'selenium-webdriver', '>= 4.11'
 
   spec.add_development_dependency 'coffee-rails'
   spec.add_development_dependency 'rails'
diff --git a/gemfiles/rails_6.x_active_admin_2.x.gemfile b/gemfiles/rails_6.x_active_admin_2.x.gemfile
index a10ce61..2281328 100644
--- a/gemfiles/rails_6.x_active_admin_2.x.gemfile
+++ b/gemfiles/rails_6.x_active_admin_2.x.gemfile
@@ -5,5 +5,6 @@ source "https://rubygems.org"
 gem "sass-rails"
 gem "rails", "~> 6.1"
 gem "activeadmin", "~> 2.0"
+gem "sqlite3", "~> 1.4"
 
 gemspec path: "../"
diff --git a/gemfiles/rails_6.x_active_admin_3.x.gemfile b/gemfiles/rails_6.x_active_admin_3.x.gemfile
index b86b845..fef869f 100644
--- a/gemfiles/rails_6.x_active_admin_3.x.gemfile
+++ b/gemfiles/rails_6.x_active_admin_3.x.gemfile
@@ -5,5 +5,6 @@ source "https://rubygems.org"
 gem "sass-rails"
 gem "rails", "~> 6.1"
 gem "activeadmin", "~> 3.0"
+gem "sqlite3", "~> 1.4"
 
 gemspec path: "../"
diff --git a/gemfiles/rails_8.x_active_admin_3.x.gemfile b/gemfiles/rails_8.x_active_admin_3.x.gemfile
new file mode 100644
index 0000000..fd2b1aa
--- /dev/null
+++ b/gemfiles/rails_8.x_active_admin_3.x.gemfile
@@ -0,0 +1,9 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "sass-rails"
+gem "rails", "~> 8.0"
+gem "activeadmin", "~> 3.0"
+
+gemspec path: "../"
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index eac0bd0..6742a39 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -1,8 +1,15 @@
 ENV['RAILS_ENV'] ||= 'test'
 
+require 'logger'
 require 'combustion'
 Combustion.initialize!(:active_record, :action_controller, :action_view, :sprockets)
 
+if Rails.version >= '7.1'
+  Rails.application.config.action_dispatch.show_exceptions = :none
+else
+  Rails.application.config.action_dispatch.show_exceptions = false
+end
+
 require 'rspec/rails'
 require 'support/reset_settings'
 
diff --git a/spec/support/capybara.rb b/spec/support/capybara.rb
index 3c499d6..0686082 100644
--- a/spec/support/capybara.rb
+++ b/spec/support/capybara.rb
@@ -1,6 +1,5 @@
 require 'capybara/rspec'
 require 'selenium-webdriver'
-require 'webdrivers/chromedriver'
 
 Capybara.javascript_driver = :selenium_chrome_headless