diff --git a/.gitignore b/.gitignore
index 4fcdbc1..88abcbc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,4 +10,5 @@ build/
 # Directory created by dartdoc
 doc/api/
 
+.idea/
 *.iml
\ No newline at end of file
diff --git a/analysis_options.yaml b/analysis_options.yaml
index a686c1b..ea2c9e9 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -1,14 +1 @@
-# Defines a default set of lint rules enforced for
-# projects at Google. For details and rationale,
-# see https://github.com/dart-lang/pedantic#enabled-lints.
-include: package:pedantic/analysis_options.yaml
-
-# For lint rules and documentation, see http://dart-lang.github.io/linter/lints.
-# Uncomment to specify additional rules.
-# linter:
-#   rules:
-#     - camel_case_types
-
-analyzer:
-#   exclude:
-#     - path/to/excluded/files/**
+include: package:lints/recommended.yaml
\ No newline at end of file
diff --git a/example/main.dart b/example/main.dart
index c38dcda..0ab4b7f 100644
--- a/example/main.dart
+++ b/example/main.dart
@@ -1,5 +1,4 @@
 import 'package:firebase_admin/firebase_admin.dart';
-import 'package:firebase_admin/src/credential.dart';
 
 void main() async {
   // applicationDefault() will look for credentials in the following locations:
diff --git a/lib/src/app.dart b/lib/src/app.dart
index 2e77697..cfc77c6 100644
--- a/lib/src/app.dart
+++ b/lib/src/app.dart
@@ -5,10 +5,7 @@ import 'package:firebase_admin/src/storage.dart';
 import '../firebase_admin.dart';
 import 'app/app.dart';
 import 'database.dart';
-import 'utils/error.dart';
 import 'service.dart';
-import 'auth.dart';
-import 'credential.dart';
 
 /// Represents initialized Firebase application and provides access to the
 /// app's services.
diff --git a/lib/src/app/app.dart b/lib/src/app/app.dart
index b725557..ffbbe7f 100644
--- a/lib/src/app/app.dart
+++ b/lib/src/app/app.dart
@@ -1,9 +1,9 @@
 import 'dart:async';
 
+import 'package:clock/clock.dart';
 import 'package:firebase_admin/src/utils/error.dart';
 
 import '../credential.dart';
-import 'package:clock/clock.dart';
 
 class FirebaseAppInternals {
   final Credential credential;
@@ -55,9 +55,9 @@ class FirebaseAppInternals {
             hasAccessTokenChanged ||
             hasExpirationChanged) {
           _cachedToken = token;
-          _tokenListeners.forEach((listener) {
+          for (var listener in _tokenListeners) {
             listener(token.accessToken);
-          });
+          }
         }
 
         var expiresIn = token.expirationTime.difference(clock.now());
diff --git a/lib/src/app/app_extension.dart b/lib/src/app/app_extension.dart
index 3f8eb82..9445b94 100644
--- a/lib/src/app/app_extension.dart
+++ b/lib/src/app/app_extension.dart
@@ -3,7 +3,6 @@ import 'dart:io';
 import 'package:firebase_admin/src/auth/credential.dart';
 
 import '../../firebase_admin.dart';
-import '../credential.dart';
 
 extension GetProjectIdExtension on App {
   String get projectId => _getProjectId(this);
diff --git a/lib/src/auth.dart b/lib/src/auth.dart
index 05a881d..dff9549 100644
--- a/lib/src/auth.dart
+++ b/lib/src/auth.dart
@@ -3,11 +3,11 @@ import 'package:firebase_admin/src/auth/token_generator.dart';
 import 'package:firebase_admin/src/auth/token_verifier.dart';
 import 'package:openid_client/openid_client.dart';
 
-import 'app.dart';
 import 'auth/auth_api_request.dart';
-import 'auth/user_record.dart';
 import 'service.dart';
 
+export 'auth/user_record.dart';
+
 /// The Firebase Auth service interface.
 class Auth implements FirebaseService {
   @override
@@ -35,6 +35,15 @@ class Auth implements FirebaseService {
     return UserRecord.fromJson(response['users'][0]);
   }
 
+  /// Gets the user data for the users corresponding to the given [uids].
+  Future<List<UserRecord>> getUsers(List<String> uids) async {
+    var response = await _authRequestHandler.getAccountInfoByUids(uids);
+    // Returns the user record populated with server response.
+    return (response['users'] as List)
+        .map((u) => UserRecord.fromJson(u))
+        .toList();
+  }
+
   /// Looks up the user identified by the provided email and returns a future
   /// that is fulfilled with a user record for the given user if that user is
   /// found.
diff --git a/lib/src/auth/auth_api_request.dart b/lib/src/auth/auth_api_request.dart
index a975360..e7d69d2 100644
--- a/lib/src/auth/auth_api_request.dart
+++ b/lib/src/auth/auth_api_request.dart
@@ -1,18 +1,16 @@
 import 'dart:convert';
 
 import 'package:clock/clock.dart';
+import 'package:collection/collection.dart';
+import 'package:http/http.dart';
 
-import '../auth.dart';
+import '../app.dart';
 import '../app/app_extension.dart';
+import '../auth.dart';
 import '../utils/api_request.dart';
 import '../utils/error.dart';
-
-import '../app.dart';
-import 'action_code_settings.dart';
 import '../utils/validator.dart' as validator;
-import 'package:http/http.dart';
-
-import 'package:collection/collection.dart';
+import 'action_code_settings.dart';
 
 class ApiClient {
   final Client httpClient;
@@ -67,6 +65,7 @@ class ApiClient {
 class AuthRequestHandler {
   final ApiClient apiClient;
 
+  // ignore: prefer_function_declarations_over_variables
   static AuthRequestHandler Function(App app) factory =
       (app) => AuthRequestHandler._(app);
 
@@ -87,6 +86,16 @@ class AuthRequestHandler {
     });
   }
 
+  /// Looks up users by their uids.
+  Future<Map<String, dynamic>> getAccountInfoByUids(List<String> uids) async {
+    if (uids.any((uid) => !validator.isUid(uid))) {
+      throw FirebaseAuthError.invalidUid();
+    }
+    return _getAccountInfo({
+      'localId': uids,
+    });
+  }
+
   /// Looks up a user by email.
   Future<Map<String, dynamic>> getAccountInfoByEmail(String email) async {
     if (!validator.isEmail(email)) {
@@ -474,6 +483,7 @@ class CreateEditAccountRequest {
         // will be passed.
         // Currently this applies to phone provider only.
         if (phoneNumber == '') 'deleteProvider': ['phone'],
+        if (customAttributes != null) 'customAttributes': customAttributes,
         if (validSince != null)
           'validSince': validSince!.millisecondsSinceEpoch ~/ 1000
       };
diff --git a/lib/src/auth/credential.dart b/lib/src/auth/credential.dart
index 311e2bf..d532786 100644
--- a/lib/src/auth/credential.dart
+++ b/lib/src/auth/credential.dart
@@ -1,14 +1,15 @@
 import 'dart:async';
-import 'dart:io';
 import 'dart:convert';
-import 'package:x509/x509.dart';
-import '../utils/error.dart';
+import 'dart:io';
+
+import 'package:clock/clock.dart';
 import 'package:http/http.dart' as http;
 import 'package:jose/jose.dart';
-import 'package:crypto_keys/crypto_keys.dart';
-import '../credential.dart';
-import 'package:clock/clock.dart';
 import 'package:openid_client/openid_client.dart' as openid;
+import 'package:x509/x509.dart';
+
+import '../credential.dart';
+import '../utils/error.dart';
 
 /// Contains the properties necessary to use service-account JSON credentials.
 class Certificate {
diff --git a/lib/src/auth/token_generator.dart b/lib/src/auth/token_generator.dart
index 3427e3b..31feef1 100644
--- a/lib/src/auth/token_generator.dart
+++ b/lib/src/auth/token_generator.dart
@@ -9,6 +9,7 @@ import '../utils/validator.dart' as validator;
 class FirebaseTokenGenerator {
   final App app;
 
+  // ignore: prefer_function_declarations_over_variables
   static FirebaseTokenGenerator Function(App app) factory =
       (app) => FirebaseTokenGenerator(app);
 
diff --git a/lib/src/auth/token_verifier.dart b/lib/src/auth/token_verifier.dart
index e979c53..b3cdf6b 100644
--- a/lib/src/auth/token_verifier.dart
+++ b/lib/src/auth/token_verifier.dart
@@ -1,8 +1,8 @@
+import 'package:meta/meta.dart';
 import 'package:openid_client/openid_client.dart';
 
 import '../../firebase_admin.dart';
 import '../app/app_extension.dart';
-import 'package:meta/meta.dart';
 import '../utils/validator.dart' as validator;
 
 /// Class for verifying general purpose Firebase JWTs.
@@ -14,6 +14,7 @@ class FirebaseTokenVerifier {
 
   final String _jwtName = 'ID token';
 
+  // ignore: prefer_function_declarations_over_variables
   static FirebaseTokenVerifier Function(App app) factory =
       (app) => FirebaseTokenVerifier(app);
 
diff --git a/lib/src/auth/user_record.dart b/lib/src/auth/user_record.dart
index 7cc68b5..725f46d 100644
--- a/lib/src/auth/user_record.dart
+++ b/lib/src/auth/user_record.dart
@@ -15,14 +15,14 @@ class UserMetadata {
                 ? null
                 : DateTime.fromMillisecondsSinceEpoch(
                     int.parse(map['createdAt'])),
-            lastSignInTime: map['lastSignInTime'] == null
+            lastSignInTime: map['lastLoginAt'] == null
                 ? null
                 : DateTime.fromMillisecondsSinceEpoch(
-                    int.parse(map['lastSignInTime'])));
+                    int.parse(map['lastLoginAt'])));
 
   Map<String, dynamic> toJson() {
     return {
-      'lastSignInTime': lastSignInTime?.toIso8601String(),
+      'lastLoginAt': lastSignInTime?.toIso8601String(),
       'creationTime': creationTime?.toIso8601String(),
     };
   }
diff --git a/lib/src/database.dart b/lib/src/database.dart
index 56cbe1c..6b30503 100644
--- a/lib/src/database.dart
+++ b/lib/src/database.dart
@@ -1,13 +1,11 @@
 import 'dart:async';
 
 import 'package:firebase_admin/src/service.dart';
+import 'package:firebase_dart/standalone_database.dart';
 
-import '../firebase_admin.dart';
+import 'app.dart';
 import 'app/app.dart';
 import 'app/app_extension.dart';
-import 'app.dart';
-
-import 'package:firebase_dart/standalone_database.dart';
 
 class _AuthTokenProvider implements AuthTokenProvider {
   final FirebaseAppInternals internals;
@@ -22,13 +20,11 @@ class _AuthTokenProvider implements AuthTokenProvider {
   }
 
   @override
-  Stream<String?> get onTokenChanged {
-    var controller = StreamController<String?>();
-    var listener = (v) => controller.add(v);
+  Stream<Future<String>?> get onTokenChanged {
+    var controller = StreamController<Future<String>?>();
+    listener(String v) => controller.add(Future.value(v));
 
-    controller.onListen = () {
-      internals.addAuthTokenListener(listener);
-    };
+    controller.onListen = () => internals.addAuthTokenListener(listener);
     controller.onCancel = () => internals.removeAuthTokenListener(listener);
 
     return controller.stream;
diff --git a/lib/src/storage.dart b/lib/src/storage.dart
index f5ef08c..3b33b96 100644
--- a/lib/src/storage.dart
+++ b/lib/src/storage.dart
@@ -1,9 +1,8 @@
 import 'package:firebase_admin/firebase_admin.dart';
+import 'package:firebase_admin/src/service.dart';
 import 'package:firebase_admin/src/utils/api_request.dart';
 import 'package:gcloud/storage.dart' as gcloud;
 
-import 'package:firebase_admin/src/app.dart';
-import 'package:firebase_admin/src/service.dart';
 import 'app/app_extension.dart';
 
 /// Storage service bound to the provided app.
diff --git a/lib/src/testing.dart b/lib/src/testing.dart
index c0e4454..b60a9c6 100644
--- a/lib/src/testing.dart
+++ b/lib/src/testing.dart
@@ -1,17 +1,17 @@
 import 'dart:convert';
 
 import 'package:clock/clock.dart';
-import 'package:firebase_admin/src/auth/credential.dart';
-import 'package:firebase_admin/src/auth/token_verifier.dart';
-import 'package:firebase_admin/src/credential.dart';
 import 'package:firebase_admin/firebase_admin.dart';
 import 'package:firebase_admin/src/app.dart';
+import 'package:firebase_admin/src/auth/credential.dart';
+import 'package:firebase_admin/src/auth/token_verifier.dart';
 import 'package:jose/jose.dart';
 import 'package:openid_client/openid_client.dart' hide Credential;
 
 class ServiceAccountMockCredential extends ServiceAccountCredential
     with MockCredentialMixin {
   @override
+  // ignore: prefer_function_declarations_over_variables
   late final AccessToken Function() tokenFactory = () {
     return MockAccessToken.fromJson({
       'access_token': (JsonWebSignatureBuilder()
diff --git a/lib/src/utils/api_request.dart b/lib/src/utils/api_request.dart
index b38c164..744757d 100644
--- a/lib/src/utils/api_request.dart
+++ b/lib/src/utils/api_request.dart
@@ -1,6 +1,3 @@
-
-
-import 'package:firebase_admin/firebase_admin.dart';
 import 'package:http/http.dart';
 
 import '../app.dart';
diff --git a/lib/src/utils/error.dart b/lib/src/utils/error.dart
index c516441..f5cf8de 100644
--- a/lib/src/utils/error.dart
+++ b/lib/src/utils/error.dart
@@ -1,3 +1,5 @@
+// ignore_for_file: non_constant_identifier_names
+
 import 'dart:convert';
 
 /// Base class for all Firebase exceptions.
@@ -69,7 +71,7 @@ class FirebaseAuthError extends _PrefixedFirebaseError {
     // serverErrorCode could contain additional details:
     // ERROR_CODE : Detailed message which can also contain colons
     final colonSeparator = serverErrorCode.indexOf(':');
-    var customMessage;
+    String? customMessage;
     if (colonSeparator != -1) {
       customMessage = serverErrorCode.substring(colonSeparator + 1).trim();
       serverErrorCode = serverErrorCode.substring(0, colonSeparator).trim();
diff --git a/pubspec.yaml b/pubspec.yaml
index 96df4c9..cedeef5 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -12,16 +12,17 @@ dependencies:
   jose: ^0.3.2
   dotenv: ^3.0.0
   openid_client: ^0.4.3
-  firebase_dart: ^1.0.0-dev.49
+  firebase_dart: ^1.0.9
   path: ^1.8.0
   meta: ^1.4.0
   http: ^0.13.0
   crypto_keys: ^0.3.0
   collection: ^1.15.0
   gcloud: ^0.8.0
+  googleapis: '>=8.0.0 <12.0.0'
 
 dev_dependencies:
   test: ^1.17.8
   fake_async: ^1.2.0
-  pedantic: ^1.11.1
+  lints: ^1.0.1
   mockito: ^5.0.10
diff --git a/test/app_test.dart b/test/app_test.dart
index 0c05b54..a97db23 100644
--- a/test/app_test.dart
+++ b/test/app_test.dart
@@ -1,20 +1,17 @@
+import 'dart:async';
 import 'dart:io';
 
 import 'package:clock/clock.dart';
+import 'package:dotenv/dotenv.dart';
+import 'package:fake_async/fake_async.dart';
+import 'package:firebase_admin/firebase_admin.dart';
+import 'package:firebase_admin/src/app.dart';
 import 'package:firebase_admin/src/auth/credential.dart';
-import 'package:firebase_admin/src/credential.dart';
+import 'package:firebase_admin/src/service.dart';
 import 'package:firebase_admin/src/testing.dart';
 import 'package:test/test.dart';
 
-import 'package:firebase_admin/firebase_admin.dart';
-import 'package:firebase_admin/src/service.dart';
-import 'dart:async';
 import 'resources/mocks.dart' as mocks;
-import 'package:fake_async/fake_async.dart';
-import 'package:dotenv/dotenv.dart';
-
-import 'resources/mocks.dart';
-import 'package:firebase_admin/src/app.dart';
 
 Matcher throwsAppError([String? message]) =>
     throwsA(TypeMatcher<FirebaseAppError>()
@@ -586,7 +583,7 @@ void main() {
 
     group('App.internals.addAuthTokenListener()', () {
       test('is notified when the token changes', () async {
-        var calledWithValue;
+        String? calledWithValue;
         mockApp.internals.addAuthTokenListener(expectAsync1((v) {
           calledWithValue = v;
         }, count: 1));
diff --git a/test/auth_test.dart b/test/auth_test.dart
index d7de079..262c9c6 100644
--- a/test/auth_test.dart
+++ b/test/auth_test.dart
@@ -1,16 +1,14 @@
 import 'dart:convert';
 import 'dart:io';
 
-import 'package:firebase_admin/firebase_admin.dart';
 import 'package:firebase_admin/src/auth/auth_api_request.dart';
-import 'package:firebase_admin/src/auth/user_record.dart';
 import 'package:firebase_admin/testing.dart';
 import 'package:jose/jose.dart';
+import 'package:mockito/mockito.dart';
 import 'package:openid_client/openid_client.dart';
 import 'package:test/test.dart';
-import 'resources/mocks.dart' as mocks;
-import 'package:mockito/mockito.dart';
 
+import 'resources/mocks.dart' as mocks;
 import 'resources/mocks.dart';
 
 Matcher throwsFirebaseError([String? code]) => throwsA(
diff --git a/test/resources/mocks.dart b/test/resources/mocks.dart
index 9823621..3d7f449 100644
--- a/test/resources/mocks.dart
+++ b/test/resources/mocks.dart
@@ -1,7 +1,6 @@
 import 'package:firebase_admin/src/auth/credential.dart';
 import 'package:firebase_admin/src/testing.dart';
 import 'package:firebase_admin/testing.dart';
-import 'package:firebase_admin/src/app.dart';
 
 var projectId = 'project_id';