diff --git a/Gemfile.lock b/Gemfile.lock
index d68dd0ae3c6..151cba7ed82 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,6 +38,7 @@ PATH
       activesupport (= 7.1.0.alpha)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
+      zeitwerk (~> 2.5)
     actionmailbox (7.1.0.alpha)
       actionpack (= 7.1.0.alpha)
       activejob (= 7.1.0.alpha)
diff --git a/actioncable/actioncable.gemspec b/actioncable/actioncable.gemspec
index 889cf30ea6e..d39f80e22a5 100644
--- a/actioncable/actioncable.gemspec
+++ b/actioncable/actioncable.gemspec
@@ -37,4 +37,5 @@ Gem::Specification.new do |s|
 
   s.add_dependency "nio4r",            "~> 2.0"
   s.add_dependency "websocket-driver", ">= 0.6.1"
+  s.add_dependency "zeitwerk",         "~> 2.5"
 end
diff --git a/actioncable/lib/action_cable.rb b/actioncable/lib/action_cable.rb
index 3827584b518..5fecfe8ab14 100644
--- a/actioncable/lib/action_cable.rb
+++ b/actioncable/lib/action_cable.rb
@@ -27,9 +27,22 @@ require "active_support"
 require "active_support/rails"
 require "action_cable/version"
 
-module ActionCable
-  extend ActiveSupport::Autoload
+require "zeitwerk"
+Zeitwerk::Loader.for_gem.tap do |loader|
+  loader.inflector.inflect("postgresql" => "PostgreSQL")
 
+  # You only want to load the adapters that are needed at runtime.
+  loader.do_not_eager_load("#{__dir__}/action_cable/subscription_adapter")
+
+  # This directory contains generators, templates, documentation, etc.
+  # Generators are required on demand, so we can just ignore it all.
+  loader.ignore("#{__dir__}/rails")
+  loader.ignore("#{__dir__}/action_cable/gem_version.rb")
+
+  loader.setup
+end
+
+module ActionCable
   INTERNAL = {
     message_types: {
       welcome: "welcome",
@@ -51,12 +64,4 @@ module ActionCable
   module_function def server
     @server ||= ActionCable::Server::Base.new
   end
-
-  autoload :Server
-  autoload :Connection
-  autoload :Channel
-  autoload :RemoteConnections
-  autoload :SubscriptionAdapter
-  autoload :TestHelper
-  autoload :TestCase
 end
diff --git a/actioncable/lib/action_cable/channel.rb b/actioncable/lib/action_cable/channel.rb
deleted file mode 100644
index d5118b9dc9d..00000000000
--- a/actioncable/lib/action_cable/channel.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-# frozen_string_literal: true
-
-module ActionCable
-  module Channel
-    extend ActiveSupport::Autoload
-
-    eager_autoload do
-      autoload :Base
-      autoload :Broadcasting
-      autoload :Callbacks
-      autoload :Naming
-      autoload :PeriodicTimers
-      autoload :Streams
-      autoload :TestCase
-    end
-  end
-end
diff --git a/actioncable/lib/action_cable/connection.rb b/actioncable/lib/action_cable/connection.rb
deleted file mode 100644
index 20b5dbe78d9..00000000000
--- a/actioncable/lib/action_cable/connection.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-# frozen_string_literal: true
-
-module ActionCable
-  module Connection
-    extend ActiveSupport::Autoload
-
-    eager_autoload do
-      autoload :Authorization
-      autoload :Base
-      autoload :ClientSocket
-      autoload :Identification
-      autoload :InternalChannel
-      autoload :MessageBuffer
-      autoload :Stream
-      autoload :StreamEventLoop
-      autoload :Subscriptions
-      autoload :TaggedLoggerProxy
-      autoload :TestCase
-      autoload :WebSocket
-    end
-  end
-end
diff --git a/actioncable/lib/action_cable/engine.rb b/actioncable/lib/action_cable/engine.rb
index e369068ade8..4d6ae04ad27 100644
--- a/actioncable/lib/action_cable/engine.rb
+++ b/actioncable/lib/action_cable/engine.rb
@@ -2,7 +2,6 @@
 
 require "rails"
 require "action_cable"
-require "action_cable/helpers/action_cable_helper"
 require "active_support/core_ext/hash/indifferent_access"
 
 module ActionCable
@@ -11,8 +10,6 @@ module ActionCable
     config.action_cable.mount_path = ActionCable::INTERNAL[:default_mount_path]
     config.action_cable.precompile_assets = true
 
-    config.eager_load_namespaces << ActionCable
-
     initializer "action_cable.helpers" do
       ActiveSupport.on_load(:action_view) do
         include ActionCable::Helpers::ActionCableHelper
diff --git a/actioncable/lib/action_cable/server.rb b/actioncable/lib/action_cable/server.rb
deleted file mode 100644
index 76d3d962ffa..00000000000
--- a/actioncable/lib/action_cable/server.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-# frozen_string_literal: true
-
-module ActionCable
-  module Server
-    extend ActiveSupport::Autoload
-
-    eager_autoload do
-      autoload :Base
-      autoload :Broadcasting
-      autoload :Connections
-      autoload :Configuration
-
-      autoload :Worker
-    end
-  end
-end
diff --git a/actioncable/lib/action_cable/server/worker.rb b/actioncable/lib/action_cable/server/worker.rb
index e1b75d4a69f..686598f4b4a 100644
--- a/actioncable/lib/action_cable/server/worker.rb
+++ b/actioncable/lib/action_cable/server/worker.rb
@@ -2,7 +2,6 @@
 
 require "active_support/callbacks"
 require "active_support/core_ext/module/attribute_accessors_per_thread"
-require "action_cable/server/worker/active_record_connection_management"
 require "concurrent"
 
 module ActionCable
diff --git a/actioncable/lib/action_cable/subscription_adapter.rb b/actioncable/lib/action_cable/subscription_adapter.rb
deleted file mode 100644
index 6a9d5c20805..00000000000
--- a/actioncable/lib/action_cable/subscription_adapter.rb
+++ /dev/null
@@ -1,12 +0,0 @@
-# frozen_string_literal: true
-
-module ActionCable
-  module SubscriptionAdapter
-    extend ActiveSupport::Autoload
-
-    autoload :Base
-    autoload :Test
-    autoload :SubscriberMap
-    autoload :ChannelPrefix
-  end
-end
diff --git a/actioncable/lib/action_cable/subscription_adapter/async.rb b/actioncable/lib/action_cable/subscription_adapter/async.rb
index c9930299c7e..1647cbfc20a 100644
--- a/actioncable/lib/action_cable/subscription_adapter/async.rb
+++ b/actioncable/lib/action_cable/subscription_adapter/async.rb
@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require "action_cable/subscription_adapter/inline"
-
 module ActionCable
   module SubscriptionAdapter
     class Async < Inline # :nodoc:
diff --git a/actioncable/lib/action_cable/subscription_adapter/test.rb b/actioncable/lib/action_cable/subscription_adapter/test.rb
index 83c28f41a19..ecfeee405a8 100644
--- a/actioncable/lib/action_cable/subscription_adapter/test.rb
+++ b/actioncable/lib/action_cable/subscription_adapter/test.rb
@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require_relative "async"
-
 module ActionCable
   module SubscriptionAdapter
     # == Test adapter for Action Cable
diff --git a/actioncable/test/channel/stream_test.rb b/actioncable/test/channel/stream_test.rb
index 7d04ceb436f..6b520695e5f 100644
--- a/actioncable/test/channel/stream_test.rb
+++ b/actioncable/test/channel/stream_test.rb
@@ -288,8 +288,6 @@ module ActionCable::StreamTests
       end
   end
 
-  require "action_cable/subscription_adapter/async"
-
   class UserCallbackChannel < ActionCable::Channel::Base
     def subscribed
       stream_from :channel do
diff --git a/actioncable/test/subscription_adapter/redis_test.rb b/actioncable/test/subscription_adapter/redis_test.rb
index c001b352cee..b078e6bb019 100644
--- a/actioncable/test/subscription_adapter/redis_test.rb
+++ b/actioncable/test/subscription_adapter/redis_test.rb
@@ -4,8 +4,6 @@ require "test_helper"
 require_relative "common"
 require_relative "channel_prefix"
 
-require "action_cable/subscription_adapter/redis"
-
 class RedisAdapterTest < ActionCable::TestCase
   include CommonSubscriptionAdapterTest
   include ChannelPrefixTest