diff --git a/lib/telegram/bot/middleware.rb b/lib/telegram/bot/middleware.rb
index 70bbd30..b8931f3 100644
--- a/lib/telegram/bot/middleware.rb
+++ b/lib/telegram/bot/middleware.rb
@@ -1,8 +1,7 @@
 require 'active_support/concern'
 require 'active_support/core_ext/hash/indifferent_access'
 require 'active_support/json'
-require 'action_dispatch/http/mime_type'
-require 'action_dispatch/http/request'
+require 'action_dispatch'
 
 module Telegram
   module Bot
diff --git a/spec/integration_helper.rb b/spec/integration_helper.rb
index 941d11e..648d835 100644
--- a/spec/integration_helper.rb
+++ b/spec/integration_helper.rb
@@ -1,7 +1,6 @@
 require 'telegram/bot/rspec/integration'
 require 'action_controller'
 require 'action_dispatch'
-require 'action_dispatch/testing/integration'
 
 require 'rails'
 require 'telegram/bot/railtie'
diff --git a/spec/telegram/bot/middleware_spec.rb b/spec/telegram/bot/middleware_spec.rb
index e5d48b4..7d84f51 100644
--- a/spec/telegram/bot/middleware_spec.rb
+++ b/spec/telegram/bot/middleware_spec.rb
@@ -20,7 +20,6 @@ RSpec.describe Telegram::Bot::Middleware do
     if ActionPack::VERSION::MAJOR < 5
       # Before Rails 5, params are parsed in middleware.
       # In Rails 5, they are parsed in Request#request_parameters.
-      require 'action_dispatch/middleware/params_parser'
       let(:instance) { ActionDispatch::ParamsParser.new(super()) }
     end
 
diff --git a/spec/telegram/bot/rspec/integration_spec.rb b/spec/telegram/bot/rspec/integration_spec.rb
index 070947a..758fee5 100644
--- a/spec/telegram/bot/rspec/integration_spec.rb
+++ b/spec/telegram/bot/rspec/integration_spec.rb
@@ -1,7 +1,6 @@
 require 'telegram/bot/rspec/integration'
 require 'action_controller'
 require 'action_dispatch'
-require 'action_dispatch/testing/integration'
 
 RSpec.describe 'Integrations helper', :telegram_bot do
   include ActionDispatch::Integration::Runner