diff --git a/add_to_app/books/flutter_module_books/lib/main.dart b/add_to_app/books/flutter_module_books/lib/main.dart
index dc0c040e4..588eda016 100644
--- a/add_to_app/books/flutter_module_books/lib/main.dart
+++ b/add_to_app/books/flutter_module_books/lib/main.dart
@@ -8,7 +8,7 @@ import 'package:flutter_module_books/api.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -35,8 +35,7 @@ class FlutterBookApiHandler extends FlutterBookApi {
 }
 
 class BookDetail extends StatefulWidget {
-  const BookDetail({Key? key, this.hostApi, this.flutterApi, this.book})
-      : super(key: key);
+  const BookDetail({super.key, this.hostApi, this.flutterApi, this.book});
 
   // These are the outgoing and incoming APIs that are here for injection for
   // tests.
@@ -148,13 +147,13 @@ class _BookDetailState extends State<BookDetail> {
 
 class BookForm extends StatelessWidget {
   const BookForm({
-    Key? key,
+    super.key,
     required this.book,
     required this.focusNode,
     required this.authorTextController,
     required this.subtitleTextController,
     required this.titleTextController,
-  }) : super(key: key);
+  });
 
   final Book book;
   final FocusNode focusNode;
diff --git a/add_to_app/fullscreen/flutter_module/lib/main.dart b/add_to_app/fullscreen/flutter_module/lib/main.dart
index 4e991894d..475961a0a 100644
--- a/add_to_app/fullscreen/flutter_module/lib/main.dart
+++ b/add_to_app/fullscreen/flutter_module/lib/main.dart
@@ -58,7 +58,7 @@ class CounterModel extends ChangeNotifier {
 /// It offers two routes, one suitable for displaying as a full screen and
 /// another designed to be part of a larger UI.class MyApp extends StatelessWidget {
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -75,7 +75,7 @@ class MyApp extends StatelessWidget {
 /// Wraps [Contents] in a Material [Scaffold] so it looks correct when displayed
 /// full-screen.
 class FullScreenView extends StatelessWidget {
-  const FullScreenView({Key? key}) : super(key: key);
+  const FullScreenView({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -96,7 +96,7 @@ class FullScreenView extends StatelessWidget {
 class Contents extends StatelessWidget {
   final bool showExit;
 
-  const Contents({this.showExit = false, Key? key}) : super(key: key);
+  const Contents({this.showExit = false, super.key});
 
   @override
   Widget build(BuildContext context) {
diff --git a/add_to_app/multiple_flutters/multiple_flutters_module/lib/main.dart b/add_to_app/multiple_flutters/multiple_flutters_module/lib/main.dart
index b7a00dcdb..6d022d0da 100644
--- a/add_to_app/multiple_flutters/multiple_flutters_module/lib/main.dart
+++ b/add_to_app/multiple_flutters/multiple_flutters_module/lib/main.dart
@@ -15,7 +15,7 @@ void topMain() => runApp(const MyApp(color: Colors.green));
 void bottomMain() => runApp(const MyApp(color: Colors.purple));
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key, required this.color}) : super(key: key);
+  const MyApp({super.key, required this.color});
 
   final MaterialColor color;
 
@@ -32,7 +32,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, required this.title}) : super(key: key);
+  const MyHomePage({super.key, required this.title});
   final String title;
 
   @override
diff --git a/add_to_app/plugin/flutter_module_using_plugin/lib/cell.dart b/add_to_app/plugin/flutter_module_using_plugin/lib/cell.dart
index 4c59ffdcd..a91c41425 100644
--- a/add_to_app/plugin/flutter_module_using_plugin/lib/cell.dart
+++ b/add_to_app/plugin/flutter_module_using_plugin/lib/cell.dart
@@ -15,7 +15,7 @@ void main() {
 }
 
 class Cell extends StatefulWidget {
-  const Cell({Key? key}) : super(key: key);
+  const Cell({super.key});
 
   @override
   State<StatefulWidget> createState() => _CellState();
diff --git a/add_to_app/plugin/flutter_module_using_plugin/lib/main.dart b/add_to_app/plugin/flutter_module_using_plugin/lib/main.dart
index 69aacdc6f..9b9c2294a 100644
--- a/add_to_app/plugin/flutter_module_using_plugin/lib/main.dart
+++ b/add_to_app/plugin/flutter_module_using_plugin/lib/main.dart
@@ -69,7 +69,7 @@ class CounterModel extends ChangeNotifier {
 /// It offers two routes, one suitable for displaying as a full screen and
 /// another designed to be part of a larger UI.
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -86,7 +86,7 @@ class MyApp extends StatelessWidget {
 /// Wraps [Contents] in a Material [Scaffold] so it looks correct when displayed
 /// full-screen.
 class FullScreenView extends StatelessWidget {
-  const FullScreenView({Key? key}) : super(key: key);
+  const FullScreenView({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -108,7 +108,7 @@ class FullScreenView extends StatelessWidget {
 class Contents extends StatelessWidget {
   final bool showExit;
 
-  const Contents({Key? key, this.showExit = false}) : super(key: key);
+  const Contents({super.key, this.showExit = false});
 
   @override
   Widget build(BuildContext context) {
diff --git a/add_to_app/prebuilt_module/flutter_module/lib/main.dart b/add_to_app/prebuilt_module/flutter_module/lib/main.dart
index 3a327a9f7..9248db3e5 100644
--- a/add_to_app/prebuilt_module/flutter_module/lib/main.dart
+++ b/add_to_app/prebuilt_module/flutter_module/lib/main.dart
@@ -58,7 +58,7 @@ class CounterModel extends ChangeNotifier {
 /// It offers two routes, one suitable for displaying as a full screen and
 /// another designed to be part of a larger UI.class MyApp extends StatelessWidget {
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -75,7 +75,7 @@ class MyApp extends StatelessWidget {
 /// Wraps [Contents] in a Material [Scaffold] so it looks correct when displayed
 /// full-screen.
 class FullScreenView extends StatelessWidget {
-  const FullScreenView({Key? key}) : super(key: key);
+  const FullScreenView({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -96,7 +96,7 @@ class FullScreenView extends StatelessWidget {
 class Contents extends StatelessWidget {
   final bool showExit;
 
-  const Contents({Key? key, this.showExit = false}) : super(key: key);
+  const Contents({super.key, this.showExit = false});
 
   @override
   Widget build(BuildContext context) {
diff --git a/analysis_options.yaml b/analysis_options.yaml
index daef00116..455dedfa4 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -18,3 +18,4 @@ linter:
     throw_in_finally: true
     unawaited_futures: true
     unnecessary_statements: true
+    use_super_parameters: true
diff --git a/android_splash_screen/lib/main.dart b/android_splash_screen/lib/main.dart
index 3b75c659b..7f0986a77 100644
--- a/android_splash_screen/lib/main.dart
+++ b/android_splash_screen/lib/main.dart
@@ -22,7 +22,7 @@ Future<void> main() async {
 
 /* Main widget that contains the Flutter starter app. */
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -37,7 +37,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, required this.title}) : super(key: key);
+  const MyHomePage({super.key, required this.title});
 
   final String title;
 
@@ -85,7 +85,7 @@ class _MyHomePageState extends State<MyHomePage> {
 
 /* A Flutter implementation of the last frame of the splashscreen animation */
 class CustomAppBar extends StatelessWidget {
-  const CustomAppBar({Key? key}) : super(key: key);
+  const CustomAppBar({super.key});
 
   @override
   Widget build(BuildContext context) {
diff --git a/experimental/linting_tool/lib/app.dart b/experimental/linting_tool/lib/app.dart
index b4d2a8bc5..60781e03a 100644
--- a/experimental/linting_tool/lib/app.dart
+++ b/experimental/linting_tool/lib/app.dart
@@ -14,7 +14,7 @@ import 'package:provider/provider.dart';
 final client = http.Client();
 
 class LintingTool extends StatefulWidget {
-  const LintingTool({Key? key}) : super(key: key);
+  const LintingTool({super.key});
 
   static const String homeRoute = routes.homeRoute;
 
diff --git a/experimental/linting_tool/lib/pages/default_lints_page.dart b/experimental/linting_tool/lib/pages/default_lints_page.dart
index 31dd2958c..81cec23e3 100644
--- a/experimental/linting_tool/lib/pages/default_lints_page.dart
+++ b/experimental/linting_tool/lib/pages/default_lints_page.dart
@@ -10,7 +10,7 @@ import 'package:linting_tool/theme/colors.dart';
 import 'package:provider/provider.dart';
 
 class DefaultLintsPage extends StatelessWidget {
-  const DefaultLintsPage({Key? key}) : super(key: key);
+  const DefaultLintsPage({super.key});
 
   @override
   Widget build(BuildContext context) {
diff --git a/experimental/linting_tool/lib/pages/default_rules_page.dart b/experimental/linting_tool/lib/pages/default_rules_page.dart
index 39c08de8e..d23fc3718 100644
--- a/experimental/linting_tool/lib/pages/default_rules_page.dart
+++ b/experimental/linting_tool/lib/pages/default_rules_page.dart
@@ -13,8 +13,8 @@ class DefaultRulesPage extends StatelessWidget {
 
   const DefaultRulesPage({
     required this.profile,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) {
diff --git a/experimental/linting_tool/lib/pages/home_page.dart b/experimental/linting_tool/lib/pages/home_page.dart
index 60dc32687..eef20ca9c 100644
--- a/experimental/linting_tool/lib/pages/home_page.dart
+++ b/experimental/linting_tool/lib/pages/home_page.dart
@@ -9,7 +9,7 @@ import 'package:linting_tool/widgets/lint_expansion_tile.dart';
 import 'package:provider/provider.dart';
 
 class HomePage extends StatelessWidget {
-  const HomePage({Key? key}) : super(key: key);
+  const HomePage({super.key});
 
   @override
   Widget build(BuildContext context) {
diff --git a/experimental/linting_tool/lib/pages/rules_page.dart b/experimental/linting_tool/lib/pages/rules_page.dart
index 72680590b..0e9816da1 100644
--- a/experimental/linting_tool/lib/pages/rules_page.dart
+++ b/experimental/linting_tool/lib/pages/rules_page.dart
@@ -16,8 +16,8 @@ class RulesPage extends StatelessWidget {
 
   const RulesPage({
     required this.selectedProfileIndex,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) {
diff --git a/experimental/linting_tool/lib/pages/saved_lints_page.dart b/experimental/linting_tool/lib/pages/saved_lints_page.dart
index 672ed49bf..45940a432 100644
--- a/experimental/linting_tool/lib/pages/saved_lints_page.dart
+++ b/experimental/linting_tool/lib/pages/saved_lints_page.dart
@@ -11,7 +11,7 @@ import 'package:linting_tool/theme/colors.dart';
 import 'package:provider/provider.dart';
 
 class SavedLintsPage extends StatefulWidget {
-  const SavedLintsPage({Key? key}) : super(key: key);
+  const SavedLintsPage({super.key});
 
   @override
   State<SavedLintsPage> createState() => _SavedLintsPageState();
diff --git a/experimental/linting_tool/lib/widgets/adaptive_nav.dart b/experimental/linting_tool/lib/widgets/adaptive_nav.dart
index 8868ea98e..d6327fc9d 100644
--- a/experimental/linting_tool/lib/widgets/adaptive_nav.dart
+++ b/experimental/linting_tool/lib/widgets/adaptive_nav.dart
@@ -15,7 +15,7 @@ import 'package:linting_tool/theme/colors.dart';
 final navKey = GlobalKey<NavigatorState>();
 
 class AdaptiveNav extends StatefulWidget {
-  const AdaptiveNav({Key? key}) : super(key: key);
+  const AdaptiveNav({super.key});
 
   @override
   State<AdaptiveNav> createState() => _AdaptiveNavState();
@@ -60,11 +60,10 @@ class _AdaptiveNavState extends State<AdaptiveNav> {
 
 class _NavView extends StatefulWidget {
   const _NavView({
-    Key? key,
     required this.extended,
     required this.destinations,
     this.trailing,
-  }) : super(key: key);
+  });
 
   final bool extended;
   final List<_Destination> destinations;
diff --git a/experimental/linting_tool/lib/widgets/lint_expansion_tile.dart b/experimental/linting_tool/lib/widgets/lint_expansion_tile.dart
index 64df09601..7adee35a6 100644
--- a/experimental/linting_tool/lib/widgets/lint_expansion_tile.dart
+++ b/experimental/linting_tool/lib/widgets/lint_expansion_tile.dart
@@ -15,8 +15,8 @@ class LintExpansionTile extends StatefulWidget {
   final Rule rule;
   const LintExpansionTile({
     required this.rule,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<LintExpansionTile> createState() => _LintExpansionTileState();
@@ -171,9 +171,7 @@ enum ProfileType {
 }
 
 class _ProfileTypeDialog extends StatelessWidget {
-  const _ProfileTypeDialog({
-    Key? key,
-  }) : super(key: key);
+  const _ProfileTypeDialog();
 
   @override
   Widget build(BuildContext context) {
@@ -209,8 +207,8 @@ class NewProfileDialog extends StatefulWidget {
   final Rule rule;
   const NewProfileDialog({
     required this.rule,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<NewProfileDialog> createState() => _NewProfileDialogState();
@@ -276,9 +274,9 @@ class _NewProfileDialogState extends State<NewProfileDialog> {
 
 class ExistingProfileDialog extends StatefulWidget {
   const ExistingProfileDialog({
-    Key? key,
+    super.key,
     required this.rule,
-  }) : super(key: key);
+  });
 
   final Rule rule;
 
diff --git a/experimental/linting_tool/lib/widgets/saved_rule_tile.dart b/experimental/linting_tool/lib/widgets/saved_rule_tile.dart
index 693fdbbc7..999ce523b 100644
--- a/experimental/linting_tool/lib/widgets/saved_rule_tile.dart
+++ b/experimental/linting_tool/lib/widgets/saved_rule_tile.dart
@@ -14,8 +14,8 @@ class SavedRuleTile extends StatefulWidget {
   final Rule rule;
   const SavedRuleTile({
     required this.rule,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<SavedRuleTile> createState() => _SavedRuleTileState();
diff --git a/experimental/linting_tool/test/widget_test.dart b/experimental/linting_tool/test/widget_test.dart
index b46e8ae8a..10bffef4b 100644
--- a/experimental/linting_tool/test/widget_test.dart
+++ b/experimental/linting_tool/test/widget_test.dart
@@ -27,9 +27,7 @@ import 'widget_test.mocks.dart';
 late MockClient _mockClient;
 
 class _TestApp extends StatelessWidget {
-  const _TestApp({
-    Key? key,
-  }) : super(key: key);
+  const _TestApp();
 
   @override
   Widget build(BuildContext context) {
diff --git a/experimental/web_dashboard/lib/src/app.dart b/experimental/web_dashboard/lib/src/app.dart
index ca2a43e33..ce856dab5 100644
--- a/experimental/web_dashboard/lib/src/app.dart
+++ b/experimental/web_dashboard/lib/src/app.dart
@@ -39,16 +39,14 @@ class DashboardApp extends StatefulWidget {
   final ApiBuilder apiBuilder;
 
   /// Runs the app using Firebase
-  DashboardApp.firebase({Key? key})
+  DashboardApp.firebase({super.key})
       : auth = FirebaseAuthService(),
-        apiBuilder = _apiBuilder,
-        super(key: key);
+        apiBuilder = _apiBuilder;
 
   /// Runs the app using mock data
-  DashboardApp.mock({Key? key})
+  DashboardApp.mock({super.key})
       : auth = MockAuthService(),
-        apiBuilder = _mockApiBuilder,
-        super(key: key);
+        apiBuilder = _mockApiBuilder;
 
   @override
   State<DashboardApp> createState() => _DashboardAppState();
@@ -86,8 +84,8 @@ class SignInSwitcher extends StatefulWidget {
   const SignInSwitcher({
     this.appState,
     this.apiBuilder,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<SignInSwitcher> createState() => _SignInSwitcherState();
diff --git a/experimental/web_dashboard/lib/src/pages/dashboard.dart b/experimental/web_dashboard/lib/src/pages/dashboard.dart
index 6b7a1f6df..d783667d7 100644
--- a/experimental/web_dashboard/lib/src/pages/dashboard.dart
+++ b/experimental/web_dashboard/lib/src/pages/dashboard.dart
@@ -10,7 +10,7 @@ import '../app.dart';
 import '../widgets/category_chart.dart';
 
 class DashboardPage extends StatelessWidget {
-  const DashboardPage({Key? key}) : super(key: key);
+  const DashboardPage({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -43,7 +43,7 @@ class DashboardPage extends StatelessWidget {
 class Dashboard extends StatelessWidget {
   final List<Category>? categories;
 
-  const Dashboard(this.categories, {Key? key}) : super(key: key);
+  const Dashboard(this.categories, {super.key});
 
   @override
   Widget build(BuildContext context) {
diff --git a/experimental/web_dashboard/lib/src/pages/entries.dart b/experimental/web_dashboard/lib/src/pages/entries.dart
index 7706dc4c9..a22ae6080 100644
--- a/experimental/web_dashboard/lib/src/pages/entries.dart
+++ b/experimental/web_dashboard/lib/src/pages/entries.dart
@@ -12,7 +12,7 @@ import '../widgets/categories_dropdown.dart';
 import '../widgets/dialogs.dart';
 
 class EntriesPage extends StatefulWidget {
-  const EntriesPage({Key? key}) : super(key: key);
+  const EntriesPage({super.key});
 
   @override
   State<EntriesPage> createState() => _EntriesPageState();
@@ -102,8 +102,8 @@ class EntryTile extends StatelessWidget {
   const EntryTile({
     this.category,
     this.entry,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) {
diff --git a/experimental/web_dashboard/lib/src/pages/home.dart b/experimental/web_dashboard/lib/src/pages/home.dart
index fea401a84..a2f45f52b 100644
--- a/experimental/web_dashboard/lib/src/pages/home.dart
+++ b/experimental/web_dashboard/lib/src/pages/home.dart
@@ -16,8 +16,8 @@ class HomePage extends StatefulWidget {
 
   const HomePage({
     required this.onSignOut,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<HomePage> createState() => _HomePageState();
diff --git a/experimental/web_dashboard/lib/src/pages/sign_in.dart b/experimental/web_dashboard/lib/src/pages/sign_in.dart
index 1b7918b58..51749c22e 100644
--- a/experimental/web_dashboard/lib/src/pages/sign_in.dart
+++ b/experimental/web_dashboard/lib/src/pages/sign_in.dart
@@ -13,8 +13,8 @@ class SignInPage extends StatelessWidget {
   const SignInPage({
     required this.auth,
     required this.onSuccess,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) {
@@ -33,8 +33,8 @@ class SignInButton extends StatefulWidget {
   const SignInButton({
     required this.auth,
     required this.onSuccess,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<SignInButton> createState() => _SignInButtonState();
diff --git a/experimental/web_dashboard/lib/src/widgets/categories_dropdown.dart b/experimental/web_dashboard/lib/src/widgets/categories_dropdown.dart
index dc737982a..ce2c65882 100644
--- a/experimental/web_dashboard/lib/src/widgets/categories_dropdown.dart
+++ b/experimental/web_dashboard/lib/src/widgets/categories_dropdown.dart
@@ -16,8 +16,8 @@ class CategoryDropdown extends StatefulWidget {
   const CategoryDropdown({
     required this.api,
     required this.onSelected,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<CategoryDropdown> createState() => _CategoryDropdownState();
diff --git a/experimental/web_dashboard/lib/src/widgets/category_chart.dart b/experimental/web_dashboard/lib/src/widgets/category_chart.dart
index 5a976e767..2c39639be 100644
--- a/experimental/web_dashboard/lib/src/widgets/category_chart.dart
+++ b/experimental/web_dashboard/lib/src/widgets/category_chart.dart
@@ -20,8 +20,8 @@ class CategoryChart extends StatelessWidget {
   const CategoryChart({
     required this.category,
     required this.api,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) {
diff --git a/experimental/web_dashboard/lib/src/widgets/category_forms.dart b/experimental/web_dashboard/lib/src/widgets/category_forms.dart
index 370f49ddd..c53e643ba 100644
--- a/experimental/web_dashboard/lib/src/widgets/category_forms.dart
+++ b/experimental/web_dashboard/lib/src/widgets/category_forms.dart
@@ -8,7 +8,7 @@ import 'package:web_dashboard/src/api/api.dart';
 import 'package:web_dashboard/src/app.dart';
 
 class NewCategoryForm extends StatefulWidget {
-  const NewCategoryForm({Key? key}) : super(key: key);
+  const NewCategoryForm({super.key});
 
   @override
   State<NewCategoryForm> createState() => _NewCategoryFormState();
@@ -39,8 +39,8 @@ class EditCategoryForm extends StatefulWidget {
   const EditCategoryForm({
     required this.category,
     required this.onDone,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<EditCategoryForm> createState() => _EditCategoryFormState();
diff --git a/experimental/web_dashboard/lib/src/widgets/dialogs.dart b/experimental/web_dashboard/lib/src/widgets/dialogs.dart
index 6f933c54c..63faeca51 100644
--- a/experimental/web_dashboard/lib/src/widgets/dialogs.dart
+++ b/experimental/web_dashboard/lib/src/widgets/dialogs.dart
@@ -11,7 +11,7 @@ import '../app.dart';
 import 'edit_entry.dart';
 
 class NewCategoryDialog extends StatelessWidget {
-  const NewCategoryDialog({Key? key}) : super(key: key);
+  const NewCategoryDialog({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -29,8 +29,8 @@ class EditCategoryDialog extends StatelessWidget {
 
   const EditCategoryDialog({
     required this.category,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) {
@@ -54,7 +54,7 @@ class EditCategoryDialog extends StatelessWidget {
 }
 
 class NewEntryDialog extends StatefulWidget {
-  const NewEntryDialog({Key? key}) : super(key: key);
+  const NewEntryDialog({super.key});
 
   @override
   State<NewEntryDialog> createState() => _NewEntryDialogState();
@@ -79,8 +79,8 @@ class EditEntryDialog extends StatelessWidget {
   const EditEntryDialog({
     this.category,
     this.entry,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) {
diff --git a/experimental/web_dashboard/lib/src/widgets/edit_entry.dart b/experimental/web_dashboard/lib/src/widgets/edit_entry.dart
index 3edf854d0..5c45c7251 100644
--- a/experimental/web_dashboard/lib/src/widgets/edit_entry.dart
+++ b/experimental/web_dashboard/lib/src/widgets/edit_entry.dart
@@ -11,7 +11,7 @@ import '../app.dart';
 import 'categories_dropdown.dart';
 
 class NewEntryForm extends StatefulWidget {
-  const NewEntryForm({Key? key}) : super(key: key);
+  const NewEntryForm({super.key});
 
   @override
   State<NewEntryForm> createState() => _NewEntryFormState();
@@ -61,8 +61,8 @@ class EditEntryForm extends StatefulWidget {
   const EditEntryForm({
     required this.entry,
     required this.onDone,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<EditEntryForm> createState() => _EditEntryFormState();
diff --git a/experimental/web_dashboard/lib/src/widgets/third_party/adaptive_scaffold.dart b/experimental/web_dashboard/lib/src/widgets/third_party/adaptive_scaffold.dart
index 2f8a33f05..975c22dcd 100644
--- a/experimental/web_dashboard/lib/src/widgets/third_party/adaptive_scaffold.dart
+++ b/experimental/web_dashboard/lib/src/widgets/third_party/adaptive_scaffold.dart
@@ -43,8 +43,8 @@ class AdaptiveScaffold extends StatefulWidget {
     required this.destinations,
     this.onNavigationIndexChange,
     this.floatingActionButton,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<AdaptiveScaffold> createState() => _AdaptiveScaffoldState();
diff --git a/navigation_and_routing/lib/src/widgets/fade_transition_page.dart b/navigation_and_routing/lib/src/widgets/fade_transition_page.dart
index 52df8d04c..552171b06 100644
--- a/navigation_and_routing/lib/src/widgets/fade_transition_page.dart
+++ b/navigation_and_routing/lib/src/widgets/fade_transition_page.dart
@@ -9,10 +9,10 @@ class FadeTransitionPage<T> extends Page<T> {
   final Duration duration;
 
   const FadeTransitionPage({
-    LocalKey? key,
+    super.key,
     required this.child,
     this.duration = const Duration(milliseconds: 300),
-  }) : super(key: key);
+  });
 
   @override
   Route<T> createRoute(BuildContext context) =>
diff --git a/simplistic_editor/lib/replacements.dart b/simplistic_editor/lib/replacements.dart
index 15e148914..419a8d071 100644
--- a/simplistic_editor/lib/replacements.dart
+++ b/simplistic_editor/lib/replacements.dart
@@ -389,19 +389,18 @@ class TextEditingInlineSpanReplacement {
 class ReplacementTextEditingController extends TextEditingController {
   /// Constructs a controller with optional text that handles the provided list of replacements.
   ReplacementTextEditingController({
-    String? text,
+    super.text,
     List<TextEditingInlineSpanReplacement>? replacements,
     this.composingRegionReplaceable = true,
-  })  : replacements = replacements ?? [],
-        super(text: text);
+  }) : replacements = replacements ?? [];
 
   /// Creates a controller for an editable text field from an initial [TextEditingValue].
   ///
   /// This constructor treats a null [value] argument as if it were [TextEditingValue.empty].
-  ReplacementTextEditingController.fromValue(TextEditingValue? value,
+  ReplacementTextEditingController.fromValue(super.value,
       {List<TextEditingInlineSpanReplacement>? replacements,
       this.composingRegionReplaceable = true})
-      : super.fromValue(value);
+      : super.fromValue();
 
   /// The [TextEditingInlineSpanReplacement]s that are evaluated on the editing value.
   ///
diff --git a/web/particle_background/lib/main.dart b/web/particle_background/lib/main.dart
index 6879a2429..315c1f715 100644
--- a/web/particle_background/lib/main.dart
+++ b/web/particle_background/lib/main.dart
@@ -6,7 +6,7 @@ import 'package:particle_background/simple_animations_package.dart';
 void main() => runApp(const ParticleApp());
 
 class ParticleApp extends StatelessWidget {
-  const ParticleApp({Key? key}) : super(key: key);
+  const ParticleApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -19,7 +19,7 @@ class ParticleApp extends StatelessWidget {
 }
 
 class ParticleBackgroundPage extends StatelessWidget {
-  const ParticleBackgroundPage({Key? key}) : super(key: key);
+  const ParticleBackgroundPage({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -36,7 +36,7 @@ class ParticleBackgroundPage extends StatelessWidget {
 class Particles extends StatefulWidget {
   final int numberOfParticles;
 
-  const Particles(this.numberOfParticles, {key}) : super(key: key);
+  const Particles(this.numberOfParticles, {super.key});
 
   @override
   State<Particles> createState() => _ParticlesState();
@@ -133,7 +133,7 @@ class ParticlePainter extends CustomPainter {
 }
 
 class AnimatedBackground extends StatelessWidget {
-  const AnimatedBackground({Key? key}) : super(key: key);
+  const AnimatedBackground({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -165,8 +165,8 @@ class AnimatedBackground extends StatelessWidget {
 
 class CenteredText extends StatelessWidget {
   const CenteredText({
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) {
diff --git a/web/particle_background/lib/simple_animations_package.dart b/web/particle_background/lib/simple_animations_package.dart
index 1cec3f7eb..af5ae7374 100644
--- a/web/particle_background/lib/simple_animations_package.dart
+++ b/web/particle_background/lib/simple_animations_package.dart
@@ -32,8 +32,7 @@ class Rendering extends StatefulWidget {
       this.onTick,
       this.startTime = Duration.zero,
       this.startTimeSimulationTicks = 20,
-      Key? key})
-      : super(key: key);
+      super.key});
 
   @override
   State<Rendering> createState() => _RenderingState();
@@ -323,7 +322,7 @@ class ControlledAnimation<T> extends StatefulWidget {
       this.child,
       this.animationControllerStatusListener,
       this.startPosition = 0.0,
-      Key? key})
+      super.key})
       : assert(
             (builderWithChild != null && child != null && builder == null) ||
                 (builder != null && builderWithChild == null && child == null),
@@ -332,8 +331,7 @@ class ControlledAnimation<T> extends StatefulWidget {
         assert(
             startPosition >= 0 && startPosition <= 1,
             "The property startPosition "
-            "must have a value between 0.0 and 1.0."),
-        super(key: key);
+            "must have a value between 0.0 and 1.0.");
 
   @override
   State<ControlledAnimation> createState() => _ControlledAnimationState<T>();