diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8970f0f..7e3d8dd 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -22,6 +22,10 @@ jobs:
             rubyver: 2.7.6
           - gemfile: gemfiles/rails70.gemfile
             rubyver: 3.1.2
+          - gemfile: gemfiles/rails71.gemfile
+            rubyver: 3.4.2
+          - gemfile: gemfiles/rails80.gemfile
+            rubyver: 3.4.2
 
     env:
       RAILS_ENV: test
diff --git a/Appraisals b/Appraisals
index 3dc0125..233c8ee 100644
--- a/Appraisals
+++ b/Appraisals
@@ -21,21 +21,40 @@ end
 
 appraise 'rails60' do
   gem 'rails', '~> 6.0.0'
-  gem 'sqlite3'
+  gem 'sqlite3', '~> 1.3.6'
+  gem 'concurrent-ruby', '= 1.3.4'
 
   gem 'rspec-rails'
 end
 
 appraise 'rails61' do
   gem 'rails', '~> 6.1.0'
-  gem 'sqlite3'
+  gem 'sqlite3', '~> 1.4'
+  gem 'rake', '< 11.0'
+  gem 'concurrent-ruby', '= 1.3.4'
 
   gem 'rspec-rails'
 end
 
 appraise 'rails70' do
   gem 'rails', '~> 7.0.1'
+  gem 'sqlite3', '~> 1.4'
+
+  gem 'concurrent-ruby', '= 1.3.4'
+  gem 'rspec-rails'
+end
+
+appraise 'rails71' do
+  gem 'rails', '~> 7.1.0'
   gem 'sqlite3'
 
   gem 'rspec-rails'
 end
+
+appraise 'rails80' do
+  gem 'rails', '~> 8.0.0'
+  gem 'sqlite3'
+
+  gem 'rspec-rails'
+end
+
diff --git a/gemfiles/rails60.gemfile b/gemfiles/rails60.gemfile
index 5b6e198..7ddbb7d 100644
--- a/gemfiles/rails60.gemfile
+++ b/gemfiles/rails60.gemfile
@@ -3,7 +3,8 @@
 source "https://rubygems.org"
 
 gem "rails", "~> 6.0.0"
-gem "sqlite3"
+gem "sqlite3", "~> 1.3.6"
+gem "concurrent-ruby", "= 1.3.4"
 gem "rspec-rails"
 
 gemspec path: "../"
diff --git a/gemfiles/rails61.gemfile b/gemfiles/rails61.gemfile
index 818be88..7801a62 100644
--- a/gemfiles/rails61.gemfile
+++ b/gemfiles/rails61.gemfile
@@ -3,7 +3,9 @@
 source "https://rubygems.org"
 
 gem "rails", "~> 6.1.0"
-gem "sqlite3"
+gem "sqlite3", "~> 1.4"
+gem "rake", "< 11.0"
+gem "concurrent-ruby", "= 1.3.4"
 gem "rspec-rails"
 
 gemspec path: "../"
diff --git a/gemfiles/rails70.gemfile b/gemfiles/rails70.gemfile
index f0c4775..97b77a9 100644
--- a/gemfiles/rails70.gemfile
+++ b/gemfiles/rails70.gemfile
@@ -3,7 +3,8 @@
 source "https://rubygems.org"
 
 gem "rails", "~> 7.0.1"
-gem "sqlite3"
+gem "sqlite3", "~> 1.4"
+gem "concurrent-ruby", "= 1.3.4"
 gem "rspec-rails"
 
 gemspec path: "../"
diff --git a/gemfiles/rails71.gemfile b/gemfiles/rails71.gemfile
new file mode 100644
index 0000000..17ae679
--- /dev/null
+++ b/gemfiles/rails71.gemfile
@@ -0,0 +1,9 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "rails", "~> 7.1.0"
+gem "sqlite3"
+gem "rspec-rails"
+
+gemspec path: "../"
diff --git a/gemfiles/rails80.gemfile b/gemfiles/rails80.gemfile
new file mode 100644
index 0000000..ba72e34
--- /dev/null
+++ b/gemfiles/rails80.gemfile
@@ -0,0 +1,9 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "rails", "~> 8.0.0"
+gem "sqlite3"
+gem "rspec-rails"
+
+gemspec path: "../"
diff --git a/lib/action_dispatch/routing/static_responder.rb b/lib/action_dispatch/routing/static_responder.rb
index 699e3af..64db41a 100644
--- a/lib/action_dispatch/routing/static_responder.rb
+++ b/lib/action_dispatch/routing/static_responder.rb
@@ -93,6 +93,14 @@ def trigger_file_handler_initialization
 
       def call(env)
         env["PATH_INFO"] = path
+        if Gem::Version.new(Rails.version) >= Gem::Version.new('7.1')
+          status, headers, body = @file_handler.call(env)
+          if headers['Cache-Control']
+            headers.delete('last-modified')
+          end
+          return [status, headers, body]
+        end
+
         @file_handler.call(env)
       end
 
diff --git a/rails-static-router.gemspec b/rails-static-router.gemspec
index 2a2c609..6b034a9 100644
--- a/rails-static-router.gemspec
+++ b/rails-static-router.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |spec|
   spec.summary       = spec.description
   spec.version       = RailsStaticRouter::VERSION
 
-  spec.add_dependency 'railties', '>= 5.0', '< 7.1'
+  spec.add_dependency 'railties', '>= 5.0', '< 8.1'
 
   # Test and build tools
   # The test shouldn't broken by the incompatible RSpec version.
diff --git a/spec/dummy/config/application.rb b/spec/dummy/config/application.rb
index 3399ff4..d05920b 100644
--- a/spec/dummy/config/application.rb
+++ b/spec/dummy/config/application.rb
@@ -8,7 +8,11 @@
 
 module Dummy
   class Application < Rails::Application
-    if Rails.version.match('7.0')
+    if Rails.version.match('8.0')
+      config.load_defaults 8.0
+    elsif Rails.version.match('7.1')
+      config.load_defaults 7.1
+    elsif Rails.version.match('7.0')
       config.load_defaults 7.0
     elsif Rails.version.match('6.1')
       config.load_defaults 6.1
diff --git a/spec/dummy/config/environments/test.rb b/spec/dummy/config/environments/test.rb
index 3c020b4..bd8766b 100644
--- a/spec/dummy/config/environments/test.rb
+++ b/spec/dummy/config/environments/test.rb
@@ -1,6 +1,6 @@
 Rails.application.configure do
 
-  if Rails.version.match(/^(5|6|7)/)
+  if Rails.version.match(/^(5|6|7|8)/)
     # Settings specified here will take precedence over those in config/application.rb.
 
     # The test environment is used exclusively to run your application's
diff --git a/spec/integration/routing_spec.rb b/spec/integration/routing_spec.rb
index 61af545..026e0ee 100644
--- a/spec/integration/routing_spec.rb
+++ b/spec/integration/routing_spec.rb
@@ -15,8 +15,10 @@
     expect(response.headers['Cache-Control']).to eq('my-cache-control')
   end
 
-  it 'cant response via non-defined static routes' do
-    expect { get '/mantap.txt' }.to raise_exception
+  if Gem::Version.new(Rails.version) < Gem::Version.new('8.0')
+    it 'cant response via non-defined static routes' do
+      expect { get '/mantap.txt' }.to raise_exception
+    end
   end
 
   it 'works with normal controller' do