diff --git a/examples/analysis_options.yaml b/examples/analysis_options.yaml
index ec6294795d2..9eb876bff40 100644
--- a/examples/analysis_options.yaml
+++ b/examples/analysis_options.yaml
@@ -3,7 +3,7 @@ include: package:flutter_lints/flutter.yaml
 analyzer:
   language:
     strict-casts: true
-    # strict-inference: true
+    strict-inference: true
     strict-raw-types: true
   errors:
     avoid_print: ignore
@@ -35,6 +35,7 @@ linter:
     - prefer_const_declarations
     - prefer_const_literals_to_create_immutables
     - prefer_final_fields
+    - prefer_if_elements_to_conditional_expressions
     - prefer_relative_imports
     - prefer_single_quotes
     - simple_directive_paths
@@ -51,6 +52,7 @@ linter:
     - unnecessary_library_directive
     - unnecessary_null_aware_operator_on_extension_on_nullable
     - unnecessary_parenthesis
+    - unnecessary_primary_constructor_body
     - unnecessary_statements
     - unnecessary_unawaited
     - unnecessary_underscores
diff --git a/examples/app-architecture/offline_first/lib/data/services/api_client_service.dart b/examples/app-architecture/offline_first/lib/data/services/api_client_service.dart
index 21d1b9cc641..11066361d74 100644
--- a/examples/app-architecture/offline_first/lib/data/services/api_client_service.dart
+++ b/examples/app-architecture/offline_first/lib/data/services/api_client_service.dart
@@ -6,7 +6,7 @@ class ApiClientService {
   Future<UserProfile> getUserProfile() async {
     // #enddocregion ApiClientService
     // Simulate a network GET request
-    await Future.delayed(const Duration(seconds: 2));
+    await Future<void>.delayed(const Duration(seconds: 2));
     // Return a dummy user profile
     return const UserProfile(
       name: 'John Doe (from API)',
@@ -19,7 +19,7 @@ class ApiClientService {
   Future<void> putUserProfile(UserProfile userProfile) async {
     // #enddocregion ApiClientService
     // Simulate a network PUT request
-    await Future.delayed(const Duration(seconds: 2));
+    await Future<void>.delayed(const Duration(seconds: 2));
     // #docregion ApiClientService
   }
 }
diff --git a/examples/app-architecture/offline_first/lib/data/services/database_service.dart b/examples/app-architecture/offline_first/lib/data/services/database_service.dart
index 6eab3d3cae6..03de279da60 100644
--- a/examples/app-architecture/offline_first/lib/data/services/database_service.dart
+++ b/examples/app-architecture/offline_first/lib/data/services/database_service.dart
@@ -7,7 +7,7 @@ class DatabaseService {
   Future<UserProfile?> fetchUserProfile() async {
     // #enddocregion DatabaseService
     // Simulate a database select query
-    await Future.delayed(const Duration(milliseconds: 100));
+    await Future<void>.delayed(const Duration(milliseconds: 100));
     // Return a dummy user profile
     return const UserProfile(
       name: 'John Doe (from Database)',
@@ -20,7 +20,7 @@ class DatabaseService {
   Future<void> updateUserProfile(UserProfile userProfile) async {
     // #enddocregion DatabaseService
     // Simulate a database update query
-    await Future.delayed(const Duration(milliseconds: 100));
+    await Future<void>.delayed(const Duration(milliseconds: 100));
     // #docregion DatabaseService
   }
 }
diff --git a/examples/app-architecture/offline_first/pubspec.yaml b/examples/app-architecture/offline_first/pubspec.yaml
index 0f1c6efaff8..0848a79b0ef 100644
--- a/examples/app-architecture/offline_first/pubspec.yaml
+++ b/examples/app-architecture/offline_first/pubspec.yaml
@@ -13,8 +13,8 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  build_runner: ^2.15.1
-  freezed: ^4.0.0
+  build_runner: ^2.16.1
+  freezed: ^4.0.1
 
 flutter:
   uses-material-design: true
diff --git a/examples/app-architecture/optimistic_state/lib/main.dart b/examples/app-architecture/optimistic_state/lib/main.dart
index d71c3df74eb..ee0b00f2a87 100644
--- a/examples/app-architecture/optimistic_state/lib/main.dart
+++ b/examples/app-architecture/optimistic_state/lib/main.dart
@@ -80,11 +80,11 @@ class _SubscribeButtonState extends State<SubscribeButton> {
   // #docregion listener2
   /// Listen to ViewModel changes.
   void _onViewModelChange() {
-    // If the subscription action has failed
+    // If the subscription action has failed.
     if (widget.viewModel.error) {
-      // Reset the error state
+      // Reset the error state.
       widget.viewModel.error = false;
-      // Show an error message
+      // Show an error message.
       ScaffoldMessenger.of(context)
           .showSnackBar(const SnackBar(content: Text('Failed to subscribe')));
     }
@@ -105,7 +105,7 @@ class SubscribeButtonStyle {
 // #enddocregion style
 
 // #docregion ViewModelFull
-/// Subscribe button View Model.
+/// Subscribe button view model.
 /// Handles the subscribe action and exposes the state to the subscription.
 // #docregion ViewModelStart
 class SubscribeButtonViewModel extends ChangeNotifier {
@@ -115,17 +115,17 @@ class SubscribeButtonViewModel extends ChangeNotifier {
   // #enddocregion ViewModelStart
 
   // #docregion States
-  // Whether the user is subscribed
+  /// Whether the user is subscribed.
   bool subscribed = false;
 
-  // Whether the subscription action has failed
+  /// Whether the subscription action has failed.
   bool error = false;
   // #enddocregion States
 
   // #docregion subscribe
   // Subscription action
   Future<void> subscribe() async {
-    // Ignore taps when subscribed
+    // Ignore taps when subscribed.
     if (subscribed) {
       return;
     }
@@ -133,16 +133,16 @@ class SubscribeButtonViewModel extends ChangeNotifier {
     // Optimistic state.
     // It will be reverted if the subscription fails.
     subscribed = true;
-    // Notify listeners to update the UI
+    // Notify listeners to update the UI.
     notifyListeners();
 
     try {
       await subscriptionRepository.subscribe();
     } catch (e) {
       print('Failed to subscribe: $e');
-      // Revert to the previous state
+      // Revert to the previous state.
       subscribed = false;
-      // Set the error state
+      // Set the error state.
       error = true;
     } finally {
       notifyListeners();
@@ -157,9 +157,9 @@ class SubscribeButtonViewModel extends ChangeNotifier {
 class SubscriptionRepository {
   /// Simulates a network request and then fails.
   Future<void> subscribe() async {
-    // Simulate a network request
-    await Future.delayed(const Duration(seconds: 1));
-    // Fail after one second
+    // Simulate a network request.
+    await Future<void>.delayed(const Duration(seconds: 1));
+    // Fail after one second.
     throw Exception('Failed to subscribe');
   }
 }
diff --git a/examples/app-architecture/result/lib/main.dart b/examples/app-architecture/result/lib/main.dart
index 2fb3b72cb4e..29b9acbf43d 100644
--- a/examples/app-architecture/result/lib/main.dart
+++ b/examples/app-architecture/result/lib/main.dart
@@ -106,7 +106,7 @@ class ApiClientService {
 
 class DatabaseService {
   Future<Result<UserProfile>> createTemporaryUser() async {
-    await Future.delayed(const Duration(seconds: 2));
+    await Future<void>.delayed(const Duration(seconds: 2));
     return Result.ok(UserProfile('John Doe', 'john@example.com'));
   }
 }
diff --git a/examples/app-architecture/result/lib/no_result.dart b/examples/app-architecture/result/lib/no_result.dart
index be66f197ea7..6dd1b923ed1 100644
--- a/examples/app-architecture/result/lib/no_result.dart
+++ b/examples/app-architecture/result/lib/no_result.dart
@@ -108,7 +108,7 @@ class UserProfileViewModelNoTryCatch extends ChangeNotifier {
 
 class DatabaseService {
   Future<UserProfile> createTemporaryUser() async {
-    await Future.delayed(const Duration(seconds: 2));
+    await Future<void>.delayed(const Duration(seconds: 2));
     return UserProfile('John Doe', 'john@example.com');
   }
 }
diff --git a/examples/app-architecture/todo_data_service/lib/main.dart b/examples/app-architecture/todo_data_service/lib/main.dart
index 2e1fdce85e5..4bb25b28439 100644
--- a/examples/app-architecture/todo_data_service/lib/main.dart
+++ b/examples/app-architecture/todo_data_service/lib/main.dart
@@ -18,15 +18,15 @@ import 'ui/todo_list/widgets/todo_list_screen.dart';
 // #docregion MainTodo
 void main() {
   // #enddocregion MainTheme
-  late DatabaseService databaseService;
+  final DatabaseService databaseService;
   if (kIsWeb) {
     throw UnsupportedError('Platform not supported');
   } else if (Platform.isLinux || Platform.isWindows || Platform.isMacOS) {
-    // Initialize FFI SQLite
+    // Initialize the FFI-based SQLite.
     sqfliteFfiInit();
     databaseService = DatabaseService(databaseFactory: databaseFactoryFfi);
   } else {
-    // Use default native SQLite
+    // Use the default native SQLite.
     databaseService = DatabaseService(databaseFactory: databaseFactory);
   }
 
diff --git a/examples/app-architecture/todo_data_service/pubspec.yaml b/examples/app-architecture/todo_data_service/pubspec.yaml
index 6806da4da73..b434a1c1469 100644
--- a/examples/app-architecture/todo_data_service/pubspec.yaml
+++ b/examples/app-architecture/todo_data_service/pubspec.yaml
@@ -18,8 +18,8 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  build_runner: ^2.15.1
-  freezed: ^4.0.0
+  build_runner: ^2.16.1
+  freezed: ^4.0.1
   json_serializable: ^6.14.1
 
 flutter:
diff --git a/examples/cookbook/design/cupertino_sheets/lib/main.dart b/examples/cookbook/design/cupertino_sheets/lib/main.dart
index 535d500d736..e0802770cde 100644
--- a/examples/cookbook/design/cupertino_sheets/lib/main.dart
+++ b/examples/cookbook/design/cupertino_sheets/lib/main.dart
@@ -29,7 +29,7 @@ class CupertinoSheetPage extends StatelessWidget {
         child: CupertinoButton.filled(
           onPressed: () {
             // #docregion ShowCupertinoSheet
-            showCupertinoSheet(
+            showCupertinoSheet<void>(
               context: context,
               scrollableBuilder: (context, scrollController) {
                 return SingleChildScrollView(
diff --git a/examples/cookbook/forms/retrieve_input/lib/main.dart b/examples/cookbook/forms/retrieve_input/lib/main.dart
index 92afe486543..f93d877bc94 100644
--- a/examples/cookbook/forms/retrieve_input/lib/main.dart
+++ b/examples/cookbook/forms/retrieve_input/lib/main.dart
@@ -48,7 +48,7 @@ class _MyCustomFormState extends State<MyCustomForm> {
         // When the user presses the button, show an alert dialog containing
         // the text that the user has entered into the text field.
         onPressed: () {
-          showDialog(
+          showDialog<void>(
             context: context,
             builder: (context) {
               return AlertDialog(
diff --git a/examples/cookbook/forms/retrieve_input/lib/step3.dart b/examples/cookbook/forms/retrieve_input/lib/step3.dart
index 30311548208..caf32d29a3c 100644
--- a/examples/cookbook/forms/retrieve_input/lib/step3.dart
+++ b/examples/cookbook/forms/retrieve_input/lib/step3.dart
@@ -11,8 +11,8 @@ class MyCustomForm extends StatefulWidget {
 // Define a corresponding State class.
 // This class holds the data related to the Form.
 class _MyCustomFormState extends State<MyCustomForm> {
-  // Create a text controller and use it to retrieve the current value
-  // of the TextField.
+  // Create a text controller and use it to
+  // retrieve the current value of the TextField.
   final myController = TextEditingController();
 
   @override
@@ -35,12 +35,12 @@ class _MyCustomFormState extends State<MyCustomForm> {
         // When the user presses the button, show an alert dialog containing
         // the text that the user has entered into the text field.
         onPressed: () {
-          showDialog(
+          showDialog<void>(
             context: context,
             builder: (context) {
               return AlertDialog(
-                // Retrieve the text that the user has entered by using the
-                // TextEditingController.
+                // Retrieve the text that the user has entered by
+                // using the TextEditingController.
                 content: Text(myController.text),
               );
             },
diff --git a/examples/cookbook/games/firestore_multiplayer/pubspec.yaml b/examples/cookbook/games/firestore_multiplayer/pubspec.yaml
index d0c22dc4429..23ba067ee68 100644
--- a/examples/cookbook/games/firestore_multiplayer/pubspec.yaml
+++ b/examples/cookbook/games/firestore_multiplayer/pubspec.yaml
@@ -10,8 +10,8 @@ dependencies:
     sdk: flutter
 
   async: ^2.13.1
-  cloud_firestore: ^6.8.0
-  firebase_core: ^4.13.0
+  cloud_firestore: ^6.9.0
+  firebase_core: ^4.14.0
   logging: ^1.3.0
   provider: ^6.1.5+1
 
diff --git a/examples/cookbook/images/cached_images/pubspec.yaml b/examples/cookbook/images/cached_images/pubspec.yaml
index 32fd335876b..890dc66d8ba 100644
--- a/examples/cookbook/images/cached_images/pubspec.yaml
+++ b/examples/cookbook/images/cached_images/pubspec.yaml
@@ -13,7 +13,7 @@ dependencies:
   flutter:
     sdk: flutter
   cupertino_icons: ^1.0.9
-  cached_network_image: ^3.4.1
+  cached_network_image: ^4.0.0
 
 dev_dependencies:
   flutter_test:
diff --git a/examples/cookbook/maintenance/error_reporting/pubspec.yaml b/examples/cookbook/maintenance/error_reporting/pubspec.yaml
index 5833de6f291..488e21c43cb 100644
--- a/examples/cookbook/maintenance/error_reporting/pubspec.yaml
+++ b/examples/cookbook/maintenance/error_reporting/pubspec.yaml
@@ -9,7 +9,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  sentry_flutter: ^9.27.0
+  sentry_flutter: ^9.28.0
 
 dev_dependencies:
   flutter_test:
diff --git a/examples/cookbook/networking/background_parsing/lib/main.dart b/examples/cookbook/networking/background_parsing/lib/main.dart
index d83d1df56ae..938ededba2d 100644
--- a/examples/cookbook/networking/background_parsing/lib/main.dart
+++ b/examples/cookbook/networking/background_parsing/lib/main.dart
@@ -39,7 +39,7 @@ class Photo {
     required this.thumbnailUrl,
   });
 
-  factory Photo.fromJson(Map<String, dynamic> json) {
+  factory Photo.fromJson(Map<String, Object?> json) {
     return Photo(
       albumId: json['albumId'] as int,
       id: json['id'] as int,
diff --git a/examples/cookbook/networking/background_parsing/lib/main_step3.dart b/examples/cookbook/networking/background_parsing/lib/main_step3.dart
index a9f2d52613e..3f14d65b0a2 100644
--- a/examples/cookbook/networking/background_parsing/lib/main_step3.dart
+++ b/examples/cookbook/networking/background_parsing/lib/main_step3.dart
@@ -38,7 +38,7 @@ class Photo {
     required this.thumbnailUrl,
   });
 
-  factory Photo.fromJson(Map<String, dynamic> json) {
+  factory Photo.fromJson(Map<String, Object?> json) {
     return Photo(
       albumId: json['albumId'] as int,
       id: json['id'] as int,
diff --git a/examples/cookbook/persistence/reading_writing_files/lib/main.dart b/examples/cookbook/persistence/reading_writing_files/lib/main.dart
index 9de5db1db57..7fd47c9947f 100644
--- a/examples/cookbook/persistence/reading_writing_files/lib/main.dart
+++ b/examples/cookbook/persistence/reading_writing_files/lib/main.dart
@@ -10,7 +10,7 @@ import 'package:path_provider/path_provider.dart';
 void main() {
   runApp(
     MaterialApp(
-      title: 'Reading and Writing Files',
+      title: 'Reading and writing files',
       home: FlutterDemo(storage: CounterStorage()),
     ),
   );
@@ -37,12 +37,12 @@ class CounterStorage {
     try {
       final file = await _localFile;
 
-      // Read the file
+      // Read the contents of the local file.
       final contents = await file.readAsString();
 
       return int.parse(contents);
-    } catch (e) {
-      // If encountering an error, return 0
+    } catch (_) {
+      // If an error was encountered, return 0.
       return 0;
     }
   }
@@ -52,7 +52,7 @@ class CounterStorage {
   Future<File> writeCounter(int counter) async {
     final file = await _localFile;
 
-    // Write the file
+    // Write the counter as a string to the file.
     return file.writeAsString('$counter');
   }
   // #enddocregion writeCounter
@@ -92,7 +92,7 @@ class _FlutterDemoState extends State<FlutterDemo> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(title: const Text('Reading and Writing Files')),
+      appBar: AppBar(title: const Text('Reading and writing files')),
       body: Center(
         child: Text('Button tapped $_counter time${_counter == 1 ? '' : 's'}.'),
       ),
diff --git a/examples/cookbook/plugins/google_mobile_ads/lib/main.dart b/examples/cookbook/plugins/google_mobile_ads/lib/main.dart
index 06bf273227c..7fb5a4c812f 100644
--- a/examples/cookbook/plugins/google_mobile_ads/lib/main.dart
+++ b/examples/cookbook/plugins/google_mobile_ads/lib/main.dart
@@ -4,7 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:google_mobile_ads/google_mobile_ads.dart';
 
 // #docregion main
-void main() async {
+void main() {
   WidgetsFlutterBinding.ensureInitialized();
   unawaited(MobileAds.instance.initialize());
 
diff --git a/examples/cookbook/testing/integration/introduction/pubspec.yaml b/examples/cookbook/testing/integration/introduction/pubspec.yaml
index 68d4c067610..d3ba9ed536f 100644
--- a/examples/cookbook/testing/integration/introduction/pubspec.yaml
+++ b/examples/cookbook/testing/integration/introduction/pubspec.yaml
@@ -15,7 +15,7 @@ dependencies:
     sdk: flutter
 
 dev_dependencies:
-  test: ^1.31.0
+  test: ^1.31.1
 
 flutter:
   uses-material-design: true
diff --git a/examples/cookbook/testing/unit/counter_app/pubspec.yaml b/examples/cookbook/testing/unit/counter_app/pubspec.yaml
index a9c3f000342..5678a091771 100644
--- a/examples/cookbook/testing/unit/counter_app/pubspec.yaml
+++ b/examples/cookbook/testing/unit/counter_app/pubspec.yaml
@@ -12,7 +12,7 @@ dependencies:
   flutter:
     sdk: flutter
   cupertino_icons: ^1.0.9
-  test: ^1.31.0
+  test: ^1.31.1
 
 flutter:
   uses-material-design: true
diff --git a/examples/cookbook/testing/unit/mocking/pubspec.yaml b/examples/cookbook/testing/unit/mocking/pubspec.yaml
index 0143517a161..9a945c69203 100644
--- a/examples/cookbook/testing/unit/mocking/pubspec.yaml
+++ b/examples/cookbook/testing/unit/mocking/pubspec.yaml
@@ -16,7 +16,7 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   mockito: ^5.8.1
-  build_runner: ^2.15.1
+  build_runner: ^2.16.1
 
 flutter:
   uses-material-design: true
diff --git a/examples/cookbook/testing/widget/orientation_tests/pubspec.yaml b/examples/cookbook/testing/widget/orientation_tests/pubspec.yaml
index 81800c296ba..2be5a349dce 100644
--- a/examples/cookbook/testing/widget/orientation_tests/pubspec.yaml
+++ b/examples/cookbook/testing/widget/orientation_tests/pubspec.yaml
@@ -9,7 +9,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  path_provider: ^2.1.5
+  path_provider: ^2.1.6
   path: ^1.9.1
   flutter_test:
     sdk: flutter
diff --git a/examples/data-and-backend/json/pubspec.yaml b/examples/data-and-backend/json/pubspec.yaml
index 113feac60c3..8b0cca48a4d 100644
--- a/examples/data-and-backend/json/pubspec.yaml
+++ b/examples/data-and-backend/json/pubspec.yaml
@@ -12,5 +12,5 @@ dependencies:
   json_annotation: ^4.12.0
 
 dev_dependencies:
-  build_runner: ^2.15.1
+  build_runner: ^2.16.1
   json_serializable: ^6.14.1
diff --git a/examples/get-started/flutter-for/android_devs/analysis_options.yaml b/examples/get-started/flutter-for/android_devs/analysis_options.yaml
deleted file mode 100644
index e2badd73ea0..00000000000
--- a/examples/get-started/flutter-for/android_devs/analysis_options.yaml
+++ /dev/null
@@ -1 +0,0 @@
-include: ../../../analysis_options.yaml
diff --git a/examples/get-started/flutter-for/ios_devs/lib/form.dart b/examples/get-started/flutter-for/ios_devs/lib/form.dart
index dfae2a464cc..a4da6ae1dc5 100644
--- a/examples/get-started/flutter-for/ios_devs/lib/form.dart
+++ b/examples/get-started/flutter-for/ios_devs/lib/form.dart
@@ -45,7 +45,7 @@ class _MyFormState extends State<MyForm> {
         // When the user presses the button, show an alert dialog with the
         // text the user has typed into our text field.
         onPressed: () {
-          showDialog(
+          showDialog<void>(
             context: context,
             builder: (context) {
               return AlertDialog(
diff --git a/examples/get-started/flutter-for/react_native_devs/lib/examples.dart b/examples/get-started/flutter-for/react_native_devs/lib/examples.dart
index 0169d333fef..55c62d8988c 100644
--- a/examples/get-started/flutter-for/react_native_devs/lib/examples.dart
+++ b/examples/get-started/flutter-for/react_native_devs/lib/examples.dart
@@ -365,7 +365,7 @@ class _TextEditingExampleState extends State<TextEditingExample> {
         ElevatedButton(
           child: const Text('Submit'),
           onPressed: () {
-            showDialog(
+            showDialog<void>(
               context: context,
               builder: (context) {
                 return AlertDialog(
@@ -399,7 +399,7 @@ class _FormExampleState extends State<FormExample> {
     final form = formKey.currentState;
     if (form != null && form.validate()) {
       form.save();
-      showDialog(
+      showDialog<void>(
         context: context,
         builder: (context) {
           return AlertDialog(
diff --git a/examples/get-started/flutter-for/react_native_devs/lib/futures.dart b/examples/get-started/flutter-for/react_native_devs/lib/futures.dart
index 54d17c99745..d2c4c0a0ccc 100644
--- a/examples/get-started/flutter-for/react_native_devs/lib/futures.dart
+++ b/examples/get-started/flutter-for/react_native_devs/lib/futures.dart
@@ -18,5 +18,5 @@ void main() {
   example
       ._getIPAddress()
       .then((ip) => print(ip))
-      .catchError((error) => print(error));
+      .onError<Exception>((error, _) => print(error));
 }
diff --git a/examples/get-started/flutter-for/react_native_devs/lib/main.dart b/examples/get-started/flutter-for/react_native_devs/lib/main.dart
index 6bb6c9c6b4d..d30dc1af628 100644
--- a/examples/get-started/flutter-for/react_native_devs/lib/main.dart
+++ b/examples/get-started/flutter-for/react_native_devs/lib/main.dart
@@ -1,4 +1,6 @@
-// ignore_for_file: avoid_print, unused_local_variable, prefer_typing_uninitialized_variables
+// ignore_for_file: avoid_print, unused_local_variable
+// ignore_for_file: inference_failure_on_uninitialized_variable
+// ignore_for_file: prefer_typing_uninitialized_variables
 
 // #docregion main
 /// Dart
diff --git a/examples/get-started/flutter-for/xamarin_devs/lib/form.dart b/examples/get-started/flutter-for/xamarin_devs/lib/form.dart
index d036cdb60b8..b8c046809f8 100644
--- a/examples/get-started/flutter-for/xamarin_devs/lib/form.dart
+++ b/examples/get-started/flutter-for/xamarin_devs/lib/form.dart
@@ -31,7 +31,7 @@ class _MyFormState extends State<MyForm> {
         // When the user presses the button, show an alert dialog with the
         // text that the user has typed into our text field.
         onPressed: () {
-          showDialog(
+          showDialog<void>(
             context: context,
             builder: (context) {
               return AlertDialog(
diff --git a/examples/integration_test/pubspec.yaml b/examples/integration_test/pubspec.yaml
index aa66353f481..2a8f0dd3ed7 100644
--- a/examples/integration_test/pubspec.yaml
+++ b/examples/integration_test/pubspec.yaml
@@ -17,7 +17,7 @@ dev_dependencies:
     sdk: flutter
   flutter_driver:
     sdk: flutter
-  test: ^1.31.0
+  test: ^1.31.1
 
 flutter:
   uses-material-design: true
diff --git a/examples/integration_test_migration/pubspec.yaml b/examples/integration_test_migration/pubspec.yaml
index 99f7d4a1673..e63b1b9e2b7 100644
--- a/examples/integration_test_migration/pubspec.yaml
+++ b/examples/integration_test_migration/pubspec.yaml
@@ -19,7 +19,7 @@ dev_dependencies:
     sdk: flutter
   flutter_driver:
     sdk: flutter
-  test: ^1.31.0
+  test: ^1.31.1
 
 flutter:
   uses-material-design: true
diff --git a/examples/internationalization/add_language/lib/nn_intl.dart b/examples/internationalization/add_language/lib/nn_intl.dart
index d02e162fa70..905a7a47d91 100644
--- a/examples/internationalization/add_language/lib/nn_intl.dart
+++ b/examples/internationalization/add_language/lib/nn_intl.dart
@@ -223,7 +223,7 @@ class _NnMaterialLocalizationsDelegate
   bool isSupported(Locale locale) => locale.languageCode == 'nn';
 
   @override
-  Future<MaterialLocalizations> load(Locale locale) async {
+  Future<MaterialLocalizations> load(Locale locale) {
     final String localeName = intl.Intl.canonicalizedLocale(locale.toString());
 
     // The locale (in this case `nn`) needs to be initialized into the custom
diff --git a/examples/internationalization/add_language/pubspec.yaml b/examples/internationalization/add_language/pubspec.yaml
index 314c26a477c..beb42d75200 100644
--- a/examples/internationalization/add_language/pubspec.yaml
+++ b/examples/internationalization/add_language/pubspec.yaml
@@ -10,7 +10,7 @@ dependencies:
     sdk: flutter
   flutter_localizations:
     sdk: flutter
-  intl: any # Use the pinned version from flutter_localizations
+  intl: any # Use the pinned version from flutter_localizations.
 
 dev_dependencies:
   flutter_test:
diff --git a/examples/internationalization/intl_example/pubspec.yaml b/examples/internationalization/intl_example/pubspec.yaml
index bace6381db4..d27b3659f47 100644
--- a/examples/internationalization/intl_example/pubspec.yaml
+++ b/examples/internationalization/intl_example/pubspec.yaml
@@ -10,13 +10,13 @@ dependencies:
     sdk: flutter
   flutter_localizations:
     sdk: flutter
-  intl: any # Use the pinned version from flutter_localizations
+  intl: any # Use the pinned version from flutter_localizations.
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
   # TODO(parlough): Add back when analyzer constraints allow.
-  # intl_translation: ^0.20.1
+  # intl_translation: ^0.22.0
 
 flutter:
   uses-material-design: true
diff --git a/examples/perf/concurrency/isolates/lib/main.dart b/examples/perf/concurrency/isolates/lib/main.dart
index 4365bf4606a..16d0c4e66e8 100644
--- a/examples/perf/concurrency/isolates/lib/main.dart
+++ b/examples/perf/concurrency/isolates/lib/main.dart
@@ -56,7 +56,7 @@ class Photo {
     required this.thumbnailUrl,
   });
 
-  factory Photo.fromJson(Map<String, dynamic> data) {
+  factory Photo.fromJson(Map<String, Object?> data) {
     return Photo(
       albumId: data['albumId'] as int,
       id: data['id'] as int,
diff --git a/examples/perf/deferred_components/pubspec.yaml b/examples/perf/deferred_components/pubspec.yaml
index 71a99ca6a1f..b91f4e08078 100644
--- a/examples/perf/deferred_components/pubspec.yaml
+++ b/examples/perf/deferred_components/pubspec.yaml
@@ -15,7 +15,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  test: ^1.31.0
+  test: ^1.31.1
 
 flutter:
   uses-material-design: true
diff --git a/examples/resources/dart_swift_concurrency/lib/async_weather.dart b/examples/resources/dart_swift_concurrency/lib/async_weather.dart
index bd15794aa46..15f77f56360 100644
--- a/examples/resources/dart_swift_concurrency/lib/async_weather.dart
+++ b/examples/resources/dart_swift_concurrency/lib/async_weather.dart
@@ -22,7 +22,7 @@ enum Weather { rainy, windy, sunny }
 class HomePageViewModel {
   const HomePageViewModel();
   Future<Weather> load() async {
-    await Future.delayed(const Duration(seconds: 1));
+    await Future<void>.delayed(const Duration(seconds: 1));
     return Weather.sunny;
   }
 }
diff --git a/examples/state_mgmt/simple/pubspec.yaml b/examples/state_mgmt/simple/pubspec.yaml
index 32e8b6c5452..8206fdd8fac 100644
--- a/examples/state_mgmt/simple/pubspec.yaml
+++ b/examples/state_mgmt/simple/pubspec.yaml
@@ -15,7 +15,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  test: ^1.31.0
+  test: ^1.31.1
 
 flutter:
   uses-material-design: true
diff --git a/examples/testing/common_errors/lib/set_state_build.dart b/examples/testing/common_errors/lib/set_state_build.dart
index 027a7d47439..28a798bf851 100644
--- a/examples/testing/common_errors/lib/set_state_build.dart
+++ b/examples/testing/common_errors/lib/set_state_build.dart
@@ -7,7 +7,7 @@ class ProblemWidget extends StatelessWidget {
   // #docregion problem
   Widget build(BuildContext context) {
     // Don't do this.
-    showDialog(
+    showDialog<void>(
       context: context,
       builder: (context) {
         return const AlertDialog(title: Text('Alert Dialog'));
@@ -38,7 +38,7 @@ class FirstScreen extends StatelessWidget {
             // Immediately show a dialog upon loading the second screen.
             Navigator.push(
               context,
-              PageRouteBuilder(
+              PageRouteBuilder<void>(
                 barrierDismissible: true,
                 opaque: false,
                 pageBuilder: (_, anim1, anim2) => const MyDialog(),
diff --git a/examples/testing/errors/pubspec.yaml b/examples/testing/errors/pubspec.yaml
index 861dfc92d8a..4256c523504 100644
--- a/examples/testing/errors/pubspec.yaml
+++ b/examples/testing/errors/pubspec.yaml
@@ -9,7 +9,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  firebase_core: ^4.9.0
+  firebase_core: ^4.14.0
 
 dev_dependencies:
   integration_test:
diff --git a/sites/docs/src/content/app-architecture/design-patterns/optimistic-state.md b/sites/docs/src/content/app-architecture/design-patterns/optimistic-state.md
index b3053215806..28ad89c7e96 100644
--- a/sites/docs/src/content/app-architecture/design-patterns/optimistic-state.md
+++ b/sites/docs/src/content/app-architecture/design-patterns/optimistic-state.md
@@ -154,9 +154,9 @@ to the `SubscriptionRepository` with the following code:
 class SubscriptionRepository {
   /// Simulates a network request and then fails.
   Future<void> subscribe() async {
-    // Simulate a network request
-    await Future.delayed(const Duration(seconds: 1));
-    // Fail after one second
+    // Simulate a network request.
+    await Future<void>.delayed(const Duration(seconds: 1));
+    // Fail after one second.
     throw Exception('Failed to subscribe');
   }
 }
@@ -178,10 +178,10 @@ add the following public members to the `SubscribeButtonViewModel`:
 
 <?code-excerpt "lib/main.dart (States)"?>
 ```dart
-// Whether the user is subscribed
+/// Whether the user is subscribed.
 bool subscribed = false;
 
-// Whether the subscription action has failed
+/// Whether the subscription action has failed.
 bool error = false;
 ```
 
@@ -202,7 +202,7 @@ Next, implement an asynchronous `subscribe()` method:
 ```dart
 // Subscription action
 Future<void> subscribe() async {
-  // Ignore taps when subscribed
+  // Ignore taps when subscribed.
   if (subscribed) {
     return;
   }
@@ -210,16 +210,16 @@ Future<void> subscribe() async {
   // Optimistic state.
   // It will be reverted if the subscription fails.
   subscribed = true;
-  // Notify listeners to update the UI
+  // Notify listeners to update the UI.
   notifyListeners();
 
   try {
     await subscriptionRepository.subscribe();
   } catch (e) {
     print('Failed to subscribe: $e');
-    // Revert to the previous state
+    // Revert to the previous state.
     subscribed = false;
-    // Set the error state
+    // Set the error state.
     error = true;
   } finally {
     notifyListeners();
@@ -247,22 +247,22 @@ The complete `SubscribeButtonViewModel` should look like this:
 
 <?code-excerpt "lib/main.dart (ViewModelFull)"?>
 ```dart
-/// Subscribe button View Model.
+/// Subscribe button view model.
 /// Handles the subscribe action and exposes the state to the subscription.
 class SubscribeButtonViewModel extends ChangeNotifier {
   SubscribeButtonViewModel({required this.subscriptionRepository});
 
   final SubscriptionRepository subscriptionRepository;
 
-  // Whether the user is subscribed
+  /// Whether the user is subscribed.
   bool subscribed = false;
 
-  // Whether the subscription action has failed
+  /// Whether the subscription action has failed.
   bool error = false;
 
   // Subscription action
   Future<void> subscribe() async {
-    // Ignore taps when subscribed
+    // Ignore taps when subscribed.
     if (subscribed) {
       return;
     }
@@ -270,16 +270,16 @@ class SubscribeButtonViewModel extends ChangeNotifier {
     // Optimistic state.
     // It will be reverted if the subscription fails.
     subscribed = true;
-    // Notify listeners to update the UI
+    // Notify listeners to update the UI.
     notifyListeners();
 
     try {
       await subscriptionRepository.subscribe();
     } catch (e) {
       print('Failed to subscribe: $e');
-      // Revert to the previous state
+      // Revert to the previous state.
       subscribed = false;
-      // Set the error state
+      // Set the error state.
       error = true;
     } finally {
       notifyListeners();
@@ -372,11 +372,11 @@ void dispose() {
 ```dart
 /// Listen to ViewModel changes.
 void _onViewModelChange() {
-  // If the subscription action has failed
+  // If the subscription action has failed.
   if (widget.viewModel.error) {
-    // Reset the error state
+    // Reset the error state.
     widget.viewModel.error = false;
-    // Show an error message
+    // Show an error message.
     ScaffoldMessenger.of(context)
         .showSnackBar(const SnackBar(content: Text('Failed to subscribe')));
   }
@@ -503,11 +503,11 @@ class _SubscribeButtonState extends State<SubscribeButton> {
 
   /// Listen to ViewModel changes.
   void _onViewModelChange() {
-    // If the subscription action has failed
+    // If the subscription action has failed.
     if (widget.viewModel.error) {
-      // Reset the error state
+      // Reset the error state.
       widget.viewModel.error = false;
-      // Show an error message
+      // Show an error message.
       ScaffoldMessenger.of(context)
           .showSnackBar(const SnackBar(content: Text('Failed to subscribe')));
     }
@@ -524,22 +524,22 @@ class SubscribeButtonStyle {
   );
 }
 
-/// Subscribe button View Model.
+/// Subscribe button view model.
 /// Handles the subscribe action and exposes the state to the subscription.
 class SubscribeButtonViewModel extends ChangeNotifier {
   SubscribeButtonViewModel({required this.subscriptionRepository});
 
   final SubscriptionRepository subscriptionRepository;
 
-  // Whether the user is subscribed
+  /// Whether the user is subscribed.
   bool subscribed = false;
 
-  // Whether the subscription action has failed
+  /// Whether the subscription action has failed.
   bool error = false;
 
   // Subscription action
   Future<void> subscribe() async {
-    // Ignore taps when subscribed
+    // Ignore taps when subscribed.
     if (subscribed) {
       return;
     }
@@ -547,16 +547,16 @@ class SubscribeButtonViewModel extends ChangeNotifier {
     // Optimistic state.
     // It will be reverted if the subscription fails.
     subscribed = true;
-    // Notify listeners to update the UI
+    // Notify listeners to update the UI.
     notifyListeners();
 
     try {
       await subscriptionRepository.subscribe();
     } catch (e) {
       print('Failed to subscribe: $e');
-      // Revert to the previous state
+      // Revert to the previous state.
       subscribed = false;
-      // Set the error state
+      // Set the error state.
       error = true;
     } finally {
       notifyListeners();
@@ -568,9 +568,9 @@ class SubscribeButtonViewModel extends ChangeNotifier {
 class SubscriptionRepository {
   /// Simulates a network request and then fails.
   Future<void> subscribe() async {
-    // Simulate a network request
-    await Future.delayed(const Duration(seconds: 1));
-    // Fail after one second
+    // Simulate a network request.
+    await Future<void>.delayed(const Duration(seconds: 1));
+    // Fail after one second.
     throw Exception('Failed to subscribe');
   }
 }
diff --git a/sites/docs/src/content/app-architecture/design-patterns/sql.md b/sites/docs/src/content/app-architecture/design-patterns/sql.md
index f205946e62b..3b88338bee8 100644
--- a/sites/docs/src/content/app-architecture/design-patterns/sql.md
+++ b/sites/docs/src/content/app-architecture/design-patterns/sql.md
@@ -437,15 +437,15 @@ which is itself passed into the `MainApp` as a constructor argument dependency.
 <?code-excerpt "lib/main.dart (MainTodo)"?>
 ```dart
 void main() {
-  late DatabaseService databaseService;
+  final DatabaseService databaseService;
   if (kIsWeb) {
     throw UnsupportedError('Platform not supported');
   } else if (Platform.isLinux || Platform.isWindows || Platform.isMacOS) {
-    // Initialize FFI SQLite
+    // Initialize the FFI-based SQLite.
     sqfliteFfiInit();
     databaseService = DatabaseService(databaseFactory: databaseFactoryFfi);
   } else {
-    // Use default native SQLite
+    // Use the default native SQLite.
     databaseService = DatabaseService(databaseFactory: databaseFactory);
   }
 
diff --git a/sites/docs/src/content/cookbook/design/cupertino-sheets.md b/sites/docs/src/content/cookbook/design/cupertino-sheets.md
index 0b00b9d8db3..95cc35c831f 100644
--- a/sites/docs/src/content/cookbook/design/cupertino-sheets.md
+++ b/sites/docs/src/content/cookbook/design/cupertino-sheets.md
@@ -47,7 +47,7 @@ that returns the content for the sheet, such as a `SingleChildScrollView`.
 
 <?code-excerpt "lib/main.dart (ShowCupertinoSheet)"?>
 ```dart
-showCupertinoSheet(
+showCupertinoSheet<void>(
   context: context,
   scrollableBuilder: (context, scrollController) {
     return SingleChildScrollView(
@@ -106,7 +106,7 @@ class CupertinoSheetPage extends StatelessWidget {
       child: Center(
         child: CupertinoButton.filled(
           onPressed: () {
-            showCupertinoSheet(
+            showCupertinoSheet<void>(
               context: context,
               scrollableBuilder: (context, scrollController) {
                 return SingleChildScrollView(
diff --git a/sites/docs/src/content/cookbook/forms/retrieve-input.md b/sites/docs/src/content/cookbook/forms/retrieve-input.md
index 8316a35267f..1c5f9f00961 100644
--- a/sites/docs/src/content/cookbook/forms/retrieve-input.md
+++ b/sites/docs/src/content/cookbook/forms/retrieve-input.md
@@ -82,12 +82,12 @@ FloatingActionButton(
   // When the user presses the button, show an alert dialog containing
   // the text that the user has entered into the text field.
   onPressed: () {
-    showDialog(
+    showDialog<void>(
       context: context,
       builder: (context) {
         return AlertDialog(
-          // Retrieve the text that the user has entered by using the
-          // TextEditingController.
+          // Retrieve the text that the user has entered by
+          // using the TextEditingController.
           content: Text(myController.text),
         );
       },
@@ -152,7 +152,7 @@ class _MyCustomFormState extends State<MyCustomForm> {
         // When the user presses the button, show an alert dialog containing
         // the text that the user has entered into the text field.
         onPressed: () {
-          showDialog(
+          showDialog<void>(
             context: context,
             builder: (context) {
               return AlertDialog(
diff --git a/sites/docs/src/content/cookbook/networking/background-parsing.md b/sites/docs/src/content/cookbook/networking/background-parsing.md
index cb0b79a3843..c78a4bedb4f 100644
--- a/sites/docs/src/content/cookbook/networking/background-parsing.md
+++ b/sites/docs/src/content/cookbook/networking/background-parsing.md
@@ -86,7 +86,7 @@ class Photo {
     required this.thumbnailUrl,
   });
 
-  factory Photo.fromJson(Map<String, dynamic> json) {
+  factory Photo.fromJson(Map<String, Object?> json) {
     return Photo(
       albumId: json['albumId'] as int,
       id: json['id'] as int,
@@ -210,7 +210,7 @@ class Photo {
     required this.thumbnailUrl,
   });
 
-  factory Photo.fromJson(Map<String, dynamic> json) {
+  factory Photo.fromJson(Map<String, Object?> json) {
     return Photo(
       albumId: json['albumId'] as int,
       id: json['id'] as int,
diff --git a/sites/docs/src/content/cookbook/persistence/reading-writing-files.md b/sites/docs/src/content/cookbook/persistence/reading-writing-files.md
index 6eb70f06042..d8a102f2e65 100644
--- a/sites/docs/src/content/cookbook/persistence/reading-writing-files.md
+++ b/sites/docs/src/content/cookbook/persistence/reading-writing-files.md
@@ -96,7 +96,7 @@ file as a string using the `'$counter'` syntax.
 Future<File> writeCounter(int counter) async {
   final file = await _localFile;
 
-  // Write the file
+  // Write the counter as a string to the file.
   return file.writeAsString('$counter');
 }
 ```
@@ -112,12 +112,12 @@ Future<int> readCounter() async {
   try {
     final file = await _localFile;
 
-    // Read the file
+    // Read the contents of the local file.
     final contents = await file.readAsString();
 
     return int.parse(contents);
-  } catch (e) {
-    // If encountering an error, return 0
+  } catch (_) {
+    // If an error was encountered, return 0.
     return 0;
   }
 }
@@ -136,7 +136,7 @@ import 'package:path_provider/path_provider.dart';
 void main() {
   runApp(
     MaterialApp(
-      title: 'Reading and Writing Files',
+      title: 'Reading and writing files',
       home: FlutterDemo(storage: CounterStorage()),
     ),
   );
@@ -158,12 +158,12 @@ class CounterStorage {
     try {
       final file = await _localFile;
 
-      // Read the file
+      // Read the contents of the local file.
       final contents = await file.readAsString();
 
       return int.parse(contents);
-    } catch (e) {
-      // If encountering an error, return 0
+    } catch (_) {
+      // If an error was encountered, return 0.
       return 0;
     }
   }
@@ -171,7 +171,7 @@ class CounterStorage {
   Future<File> writeCounter(int counter) async {
     final file = await _localFile;
 
-    // Write the file
+    // Write the counter as a string to the file.
     return file.writeAsString('$counter');
   }
 }
@@ -210,7 +210,7 @@ class _FlutterDemoState extends State<FlutterDemo> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(title: const Text('Reading and Writing Files')),
+      appBar: AppBar(title: const Text('Reading and writing files')),
       body: Center(
         child: Text('Button tapped $_counter time${_counter == 1 ? '' : 's'}.'),
       ),
diff --git a/sites/docs/src/content/cookbook/plugins/google-mobile-ads.md b/sites/docs/src/content/cookbook/plugins/google-mobile-ads.md
index d4c8b1e9d8a..4110078c87e 100644
--- a/sites/docs/src/content/cookbook/plugins/google-mobile-ads.md
+++ b/sites/docs/src/content/cookbook/plugins/google-mobile-ads.md
@@ -146,7 +146,7 @@ You need to initialize the Mobile Ads SDK before loading ads.
 
     <?code-excerpt "lib/main.dart (main)"?>
     ```dart
-    void main() async {
+    void main() {
       WidgetsFlutterBinding.ensureInitialized();
       unawaited(MobileAds.instance.initialize());
     
diff --git a/sites/docs/src/content/flutter-for/dart-swift-concurrency.md b/sites/docs/src/content/flutter-for/dart-swift-concurrency.md
index fc44bab3c68..e9417809180 100644
--- a/sites/docs/src/content/flutter-for/dart-swift-concurrency.md
+++ b/sites/docs/src/content/flutter-for/dart-swift-concurrency.md
@@ -175,7 +175,7 @@ returns a `Future<Weather>` object:
 class HomePageViewModel {
   const HomePageViewModel();
   Future<Weather> load() async {
-    await Future.delayed(const Duration(seconds: 1));
+    await Future<void>.delayed(const Duration(seconds: 1));
     return Weather.sunny;
   }
 }
diff --git a/sites/docs/src/content/flutter-for/react-native-devs.md b/sites/docs/src/content/flutter-for/react-native-devs.md
index f35ccc3ee2b..d9e1395cdc3 100644
--- a/sites/docs/src/content/flutter-for/react-native-devs.md
+++ b/sites/docs/src/content/flutter-for/react-native-devs.md
@@ -252,7 +252,7 @@ void main() {
   example
       ._getIPAddress()
       .then((ip) => print(ip))
-      .catchError((error) => print(error));
+      .onError<Exception>((error, _) => print(error));
 }
 ```
 
@@ -2070,7 +2070,7 @@ Widget build(BuildContext context) {
       ElevatedButton(
         child: const Text('Submit'),
         onPressed: () {
-          showDialog(
+          showDialog<void>(
             context: context,
             builder: (context) {
               return AlertDialog(
@@ -2147,7 +2147,7 @@ void _submit() {
   final form = formKey.currentState;
   if (form != null && form.validate()) {
     form.save();
-    showDialog(
+    showDialog<void>(
       context: context,
       builder: (context) {
         return AlertDialog(
diff --git a/sites/docs/src/content/flutter-for/uikit-devs.md b/sites/docs/src/content/flutter-for/uikit-devs.md
index 72f3238e0cc..1afd4249f42 100644
--- a/sites/docs/src/content/flutter-for/uikit-devs.md
+++ b/sites/docs/src/content/flutter-for/uikit-devs.md
@@ -1503,7 +1503,7 @@ class _MyFormState extends State<MyForm> {
         // When the user presses the button, show an alert dialog with the
         // text the user has typed into our text field.
         onPressed: () {
-          showDialog(
+          showDialog<void>(
             context: context,
             builder: (context) {
               return AlertDialog(
diff --git a/sites/docs/src/content/flutter-for/xamarin-forms-devs.md b/sites/docs/src/content/flutter-for/xamarin-forms-devs.md
index 5026c0ccc08..743dd63b1df 100644
--- a/sites/docs/src/content/flutter-for/xamarin-forms-devs.md
+++ b/sites/docs/src/content/flutter-for/xamarin-forms-devs.md
@@ -2167,7 +2167,7 @@ class _MyFormState extends State<MyForm> {
         // When the user presses the button, show an alert dialog with the
         // text that the user has typed into our text field.
         onPressed: () {
-          showDialog(
+          showDialog<void>(
             context: context,
             builder: (context) {
               return AlertDialog(
diff --git a/sites/docs/src/content/testing/common-errors.md b/sites/docs/src/content/testing/common-errors.md
index d11f2ef3696..55670ea1d09 100644
--- a/sites/docs/src/content/testing/common-errors.md
+++ b/sites/docs/src/content/testing/common-errors.md
@@ -425,7 +425,7 @@ The following snippet seems to be a common culprit of this error:
 ```dart
 Widget build(BuildContext context) {
   // Don't do this.
-  showDialog(
+  showDialog<void>(
     context: context,
     builder: (context) {
       return const AlertDialog(title: Text('Alert Dialog'));
@@ -473,7 +473,7 @@ class FirstScreen extends StatelessWidget {
             // Immediately show a dialog upon loading the second screen.
             Navigator.push(
               context,
-              PageRouteBuilder(
+              PageRouteBuilder<void>(
                 barrierDismissible: true,
                 opaque: false,
                 pageBuilder: (_, anim1, anim2) => const MyDialog(),
diff --git a/sites/docs/src/content/ui/internationalization/index.md b/sites/docs/src/content/ui/internationalization/index.md
index 95b70a91a10..aeed5c6925c 100644
--- a/sites/docs/src/content/ui/internationalization/index.md
+++ b/sites/docs/src/content/ui/internationalization/index.md
@@ -1108,7 +1108,7 @@ class _NnMaterialLocalizationsDelegate
   bool isSupported(Locale locale) => locale.languageCode == 'nn';
 
   @override
-  Future<MaterialLocalizations> load(Locale locale) async {
+  Future<MaterialLocalizations> load(Locale locale) {
     final String localeName = intl.Intl.canonicalizedLocale(locale.toString());
 
     // The locale (in this case `nn`) needs to be initialized into the custom