diff --git a/analysis_options.yaml b/analysis_options.yaml
index 2af0e96ef0..264edac979 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -72,6 +72,7 @@ linter:
     - unnecessary_brace_in_string_interps
     - unnecessary_const
     - unnecessary_getters_setters
+    - unnecessary_late
     - unnecessary_library_name
     - unnecessary_library_directive
     - unnecessary_new
diff --git a/app/lib/account/consent_backend.dart b/app/lib/account/consent_backend.dart
index 51d7ea630b..342bf4aa82 100644
--- a/app/lib/account/consent_backend.dart
+++ b/app/lib/account/consent_backend.dart
@@ -61,7 +61,7 @@ class ConsentBackend {
     final c = await _lookupAndCheck(consentId, user);
     final action = _actions[c.kind]!;
     final fromAgent = c.fromAgent!;
-    late String invitingUserEmail;
+    final String invitingUserEmail;
     if (looksLikeUserId(fromAgent)) {
       invitingUserEmail = (await accountBackend.getEmailOfUserId(fromAgent))!;
     } else {
diff --git a/app/lib/account/models.dart b/app/lib/account/models.dart
index 21468174f1..25ad196dcc 100644
--- a/app/lib/account/models.dart
+++ b/app/lib/account/models.dart
@@ -75,7 +75,7 @@ class User extends db.ExpandoModel<String> {
   }
 
   late final isVisible = !isBlocked && !isModerated && !isDeleted;
-  late final isNotVisible = !isVisible;
+  bool get isNotVisible => !isVisible;
 
   void updateIsModerated({
     required bool isModerated,
diff --git a/app/lib/account/session_cookie.dart b/app/lib/account/session_cookie.dart
index 8a503e2baf..c3189b091c 100644
--- a/app/lib/account/session_cookie.dart
+++ b/app/lib/account/session_cookie.dart
@@ -101,5 +101,5 @@ class ClientSessionCookieStatus {
     required this.isStrict,
   });
 
-  late final isPresent = sessionId != null && sessionId!.isNotEmpty;
+  bool get isPresent => sessionId?.isNotEmpty ?? false;
 }
diff --git a/app/lib/admin/tools/set_user_blocked.dart b/app/lib/admin/tools/set_user_blocked.dart
index 75f0c1a8d4..5ddde62c38 100644
--- a/app/lib/admin/tools/set_user_blocked.dart
+++ b/app/lib/admin/tools/set_user_blocked.dart
@@ -18,7 +18,7 @@ Future<String> executeSetUserBlocked(List<String> args) async {
   final valueAsString = args.length == 2 ? args[1] : null;
   final blockedStatus = _parseValue(valueAsString);
 
-  late List<User> users;
+  final List<User> users;
   if (isValidEmail(idOrEmail)) {
     users = await accountBackend.lookupUsersByEmail(idOrEmail);
   } else {
diff --git a/app/lib/fake/backend/fake_auth_provider.dart b/app/lib/fake/backend/fake_auth_provider.dart
index c522faca7e..b189601707 100644
--- a/app/lib/fake/backend/fake_auth_provider.dart
+++ b/app/lib/fake/backend/fake_auth_provider.dart
@@ -101,7 +101,6 @@ class FakeAuthProvider extends BaseAuthProvider {
 
   @override
   Future<AuthResult?> tryAuthenticateAsUser(String input) async {
-    late String jwtTokenValue;
     var accessToken = input;
     // TODO: migrate all test to use base64-encoded token
     try {
@@ -110,6 +109,7 @@ class FakeAuthProvider extends BaseAuthProvider {
       // ignored
     }
 
+    final String jwtTokenValue;
     if (accessToken.contains('-at-') &&
         !JsonWebToken.looksLikeJWT(accessToken)) {
       final uri = Uri.tryParse(accessToken);
diff --git a/app/lib/fake/backend/fake_pub_worker.dart b/app/lib/fake/backend/fake_pub_worker.dart
index 58ad553393..9a0b4ff147 100644
--- a/app/lib/fake/backend/fake_pub_worker.dart
+++ b/app/lib/fake/backend/fake_pub_worker.dart
@@ -113,7 +113,7 @@ Future<void> _fakeAnalysis(Payload payload) async {
           total: 20,
         );
 
-        late Summary summary;
+        final Summary summary;
         if (packageStatus.isObsolete || packageStatus.isLegacy) {
           summary = _emptySummary(payload.package, v.version);
           dartdocFiles.clear();
diff --git a/app/lib/frontend/handlers/misc.dart b/app/lib/frontend/handlers/misc.dart
index ad52b91082..46599849d6 100644
--- a/app/lib/frontend/handlers/misc.dart
+++ b/app/lib/frontend/handlers/misc.dart
@@ -72,7 +72,7 @@ Future<shelf.Response> readinessCheckHandler(shelf.Request request) async {
 
 /// Handles requests for /topics
 Future<shelf.Response> topicsPageHandler(shelf.Request request) async {
-  late Map<String, int> topics;
+  Map<String, int>? topics;
   try {
     final data = await cache.topicsPageData().get(() async {
       return await storageService
@@ -83,16 +83,14 @@ Future<shelf.Response> topicsPageHandler(shelf.Request request) async {
     topics = (utf8JsonDecoder.convert(data!) as Map<String, dynamic>)
         .cast<String, int>();
   } on FormatException catch (e, st) {
-    topics = {};
     _log.shout('Error loading topics, error:', e, st);
   } on DetailedApiRequestError catch (e, st) {
-    topics = {};
     if (e.status != 404) {
       _log.severe('Failed to load topics.json, error : ', e, st);
     }
   }
 
-  return htmlResponse(renderTopicsPage(topics));
+  return htmlResponse(renderTopicsPage(topics ?? {}));
 }
 
 /// Handles requests for /robots.txt
diff --git a/app/lib/frontend/handlers/package.dart b/app/lib/frontend/handlers/package.dart
index c765c8a7d0..368d166a98 100644
--- a/app/lib/frontend/handlers/package.dart
+++ b/app/lib/frontend/handlers/package.dart
@@ -296,7 +296,7 @@ Future<shelf.Response> _handlePackagePage({
       }
     }
     final serviceSw = Stopwatch()..start();
-    late PackagePageData data;
+    final PackagePageData data;
     try {
       data = await loadPackagePageData(package, versionName, assetKind);
     } on ModeratedException {
diff --git a/app/lib/frontend/request_context.dart b/app/lib/frontend/request_context.dart
index c62bfef847..d4e3ced12d 100644
--- a/app/lib/frontend/request_context.dart
+++ b/app/lib/frontend/request_context.dart
@@ -62,7 +62,7 @@ class RequestContext {
             clientSessionCookieStatus ?? ClientSessionCookieStatus.missing();
 
   late final _isAuthenticated = sessionData?.isAuthenticated ?? false;
-  late final isNotAuthenticated = !_isAuthenticated;
+  bool get isNotAuthenticated => !_isAuthenticated;
   late final authenticatedUserId =
       _isAuthenticated ? sessionData?.userId : null;
 }
diff --git a/app/lib/frontend/templates/misc.dart b/app/lib/frontend/templates/misc.dart
index b57144248c..3f8ee7b125 100644
--- a/app/lib/frontend/templates/misc.dart
+++ b/app/lib/frontend/templates/misc.dart
@@ -26,7 +26,7 @@ final _securityMarkdown = _readDocContent('security.md');
 /// basename as a key, e.g.:
 /// - `help.md` -> (title: 'Help', content: ...)
 /// - `help-search.md` -> (title: 'Search', content: ...)
-late final _helpArticles = () {
+final _helpArticles = () {
   final docDir = io.Directory(static_files.resolveDocDirPath());
   final files = docDir
       .listSync()
@@ -47,7 +47,7 @@ late final _helpArticles = () {
   return results;
 }();
 
-late final _sideImage = d.Image.decorative(
+final _sideImage = d.Image.decorative(
   src: static_files.staticUrls.packagesSideImage,
   width: 400,
   height: 400,
diff --git a/app/lib/package/export_api_to_bucket.dart b/app/lib/package/export_api_to_bucket.dart
index a29f9fa817..5b34e40573 100644
--- a/app/lib/package/export_api_to_bucket.dart
+++ b/app/lib/package/export_api_to_bucket.dart
@@ -302,6 +302,6 @@ class _BytesAndHash {
 
   _BytesAndHash(this.bytes);
 
-  late final length = bytes.length;
+  int get length => bytes.length;
   late final md5Hash = md5.convert(bytes).bytes;
 }
diff --git a/app/lib/package/model_properties.dart b/app/lib/package/model_properties.dart
index 5a148c5114..e44fcc4fd7 100644
--- a/app/lib/package/model_properties.dart
+++ b/app/lib/package/model_properties.dart
@@ -202,7 +202,7 @@ class Pubspec {
   late final List<Uri> funding = _inner.funding ?? const <Uri>[];
 
   /// Whether the pubspec has any topic entry.
-  late final hasTopic = canonicalizedTopics.isNotEmpty;
+  bool get hasTopic => canonicalizedTopics.isNotEmpty;
 }
 
 class MinSdkVersion {
diff --git a/app/lib/search/mem_index.dart b/app/lib/search/mem_index.dart
index 5ccf43a11f..201f8dcdbd 100644
--- a/app/lib/search/mem_index.dart
+++ b/app/lib/search/mem_index.dart
@@ -148,7 +148,7 @@ class InMemoryPackageIndex {
     }
 
     List<String>? nameMatches;
-    late List<PackageHit> packageHits;
+    List<PackageHit> packageHits;
     switch (query.effectiveOrder ?? SearchOrder.top) {
       case SearchOrder.top:
         if (textResults == null) {
diff --git a/app/lib/search/token_index.dart b/app/lib/search/token_index.dart
index 1d55992765..98f08c35ed 100644
--- a/app/lib/search/token_index.dart
+++ b/app/lib/search/token_index.dart
@@ -15,15 +15,15 @@ class Score {
   Score(this._values);
   Score.empty() : _values = const <String, double>{};
 
-  late final bool isEmpty = _values.isEmpty;
-  late final bool isNotEmpty = !isEmpty;
+  bool get isEmpty => _values.isEmpty;
+  bool get isNotEmpty => !isEmpty;
 
   Set<String> getKeys({bool Function(String key)? where}) =>
       _values.keys.where((e) => where == null || where(e)).toSet();
   late final double maxValue = _values.values.fold(0.0, math.max);
   Map<String, double> getValues() => _values;
   bool containsKey(String key) => _values.containsKey(key);
-  late final int length = _values.length;
+  int get length => _values.length;
 
   double operator [](String key) => _values[key] ?? 0.0;
 
diff --git a/app/lib/service/entrypoint/search_index.dart b/app/lib/service/entrypoint/search_index.dart
index c8c3245d61..a408195de8 100644
--- a/app/lib/service/entrypoint/search_index.dart
+++ b/app/lib/service/entrypoint/search_index.dart
@@ -26,7 +26,7 @@ final _logger = Logger('search_index');
 Future<void> main(List<String> args, var message) async {
   final timer = Timer.periodic(Duration(milliseconds: 250), (_) {});
 
-  late ServicesWrapperFn servicesWrapperFn;
+  final ServicesWrapperFn servicesWrapperFn;
   if (envConfig.isRunningInAppengine) {
     servicesWrapperFn = withServices;
     setupAppEngineLogging();
diff --git a/app/lib/service/topics/models.dart b/app/lib/service/topics/models.dart
index f19695051d..85453d3b17 100644
--- a/app/lib/service/topics/models.dart
+++ b/app/lib/service/topics/models.dart
@@ -16,7 +16,7 @@ part 'models.g.dart';
 
 final _log = Logger('topics');
 
-late final canonicalTopics = () {
+final canonicalTopics = () {
   try {
     final f = File(p.join(resolveAppDir(), '../doc/topics.yaml'));
     return CanonicalTopicFileContent.fromYaml(f.readAsStringSync());
diff --git a/app/lib/shared/configuration.dart b/app/lib/shared/configuration.dart
index 09344637ed..2fb986046a 100644
--- a/app/lib/shared/configuration.dart
+++ b/app/lib/shared/configuration.dart
@@ -431,7 +431,7 @@ final class Configuration {
   late final isFakeOrTest =
       projectId == 'dartlang-pub-fake' || projectId == 'dartlang-pub-test';
 
-  late final isPublishedEmailNotificationEnabled = true;
+  bool get isPublishedEmailNotificationEnabled => true;
 }
 
 /// Data structure to describe an admin user.
diff --git a/pkg/_pub_shared/lib/validation/html/html_validation.dart b/pkg/_pub_shared/lib/validation/html/html_validation.dart
index 0539d18d6a..0c79ac5488 100644
--- a/pkg/_pub_shared/lib/validation/html/html_validation.dart
+++ b/pkg/_pub_shared/lib/validation/html/html_validation.dart
@@ -29,7 +29,7 @@ void parseAndValidateHtml(String html) {
 /// - `<script> tags have no `src` attribute or have content (except `ld+json`
 ///   meta content).
 void validateHtml(Node root) {
-  late List<Element> Function(String selector) querySelectorAll;
+  final List<Element> Function(String selector) querySelectorAll;
   if (root is DocumentFragment) {
     querySelectorAll = root.querySelectorAll;
   } else if (root is Document) {
diff --git a/pkg/pub_worker/lib/src/bin/pana_wrapper.dart b/pkg/pub_worker/lib/src/bin/pana_wrapper.dart
index 203827375c..5b603f2d37 100644
--- a/pkg/pub_worker/lib/src/bin/pana_wrapper.dart
+++ b/pkg/pub_worker/lib/src/bin/pana_wrapper.dart
@@ -171,9 +171,9 @@ Future<void> main(List<String> args) async {
 }
 
 final _workerConfigDirectory = Directory('/home/worker/config');
-late final _workerConfigPath =
+final _workerConfigPath =
     _workerConfigDirectory.existsSync() ? _workerConfigDirectory.path : null;
-late final _isInsideDocker = _workerConfigPath != null;
+final _isInsideDocker = _workerConfigPath != null;
 String? _configHomePath(String sdk, String kind) {
   if (!_isInsideDocker) {
     return null;
diff --git a/pkg/web_app/lib/src/widget/completion/widget.dart b/pkg/web_app/lib/src/widget/completion/widget.dart
index f184a5598c..5f607ab624 100644
--- a/pkg/web_app/lib/src/widget/completion/widget.dart
+++ b/pkg/web_app/lib/src/widget/completion/widget.dart
@@ -445,7 +445,7 @@ final class _CompletionWidget {
     return CompletionData.fromJson(root as Map<String, dynamic>);
   }
 
-  static late final _canvas = HTMLCanvasElement();
+  static final HTMLCanvasElement _canvas = HTMLCanvasElement();
   static int getTextWidth(String text, Element element) {
     final ctx = _canvas.context2D;
     final style = window.getComputedStyle(element);