diff --git a/packages/google_sign_in/google_sign_in_ios/CHANGELOG.md b/packages/google_sign_in/google_sign_in_ios/CHANGELOG.md
index fae9e92a608f..96d8d81e260a 100644
--- a/packages/google_sign_in/google_sign_in_ios/CHANGELOG.md
+++ b/packages/google_sign_in/google_sign_in_ios/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 6.3.1
+
+* Fixes a bug that would cause `authorizeServer` to throw a `PlatformException`
+  due to an expired or revoked token.
+
 ## 6.3.0
 
 * Adds UIScene compatibility.
diff --git a/packages/google_sign_in/google_sign_in_ios/lib/google_sign_in_ios.dart b/packages/google_sign_in/google_sign_in_ios/lib/google_sign_in_ios.dart
index 2f11c953e5b6..b68bb58a0654 100644
--- a/packages/google_sign_in/google_sign_in_ios/lib/google_sign_in_ios.dart
+++ b/packages/google_sign_in/google_sign_in_ios/lib/google_sign_in_ios.dart
@@ -170,7 +170,15 @@ class GoogleSignInIOS extends GoogleSignInPlatform {
     // if the authentication isn't associated with an existing sign-in user
     // run the authentication flow first.
     if (userId == null) {
-      SignInResult result = await _api.restorePreviousSignIn();
+      SignInResult result;
+      try {
+        result = await _api.restorePreviousSignIn();
+      } on Exception {
+        // This can throw if the token has expired or been revoked.
+        // e.g. PlatformException(org.openid.appauth.oauth_token: -10, invalid_grant: Token has been expired or revoked.)
+        result = SignInResult(error: SignInFailure(type: .unknown));
+      }
+
       final SignInSuccess? success = result.success;
       if (success == null) {
         // There's no existing sign-in to use, so return the results of the
diff --git a/packages/google_sign_in/google_sign_in_ios/pubspec.yaml b/packages/google_sign_in/google_sign_in_ios/pubspec.yaml
index c59465512615..4484e289128b 100644
--- a/packages/google_sign_in/google_sign_in_ios/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in_ios/pubspec.yaml
@@ -2,7 +2,7 @@ name: google_sign_in_ios
 description: iOS implementation of the google_sign_in plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/google_sign_in/google_sign_in_ios
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+google_sign_in%22
-version: 6.3.0
+version: 6.3.1
 
 environment:
   sdk: ^3.10.0
diff --git a/packages/google_sign_in/google_sign_in_ios/test/google_sign_in_ios_test.dart b/packages/google_sign_in/google_sign_in_ios/test/google_sign_in_ios_test.dart
index c39b626591c3..b123b2f6e675 100644
--- a/packages/google_sign_in/google_sign_in_ios/test/google_sign_in_ios_test.dart
+++ b/packages/google_sign_in/google_sign_in_ios/test/google_sign_in_ios_test.dart
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:google_sign_in_ios/google_sign_in_ios.dart';
 import 'package:google_sign_in_ios/src/messages.g.dart';
@@ -915,6 +916,52 @@ void main() {
       },
     );
 
+    test(
+      'attempts to authenticate if tokens have expired or been revoked',
+      () async {
+        const scopes = <String>['a', 'b'];
+        when(mockApi.restorePreviousSignIn()).thenThrow(
+          PlatformException(
+            code: 'org.openid.appauth.oauth_token: -10',
+            message: 'invalid_grant: Token has been expired or revoked.',
+          ),
+        );
+        when(mockApi.signIn(scopes, null)).thenAnswer(
+          (_) async => SignInResult(
+            success: SignInSuccess(
+              user: UserData(
+                displayName: _testUser.displayName,
+                email: _testUser.email,
+                userId: _testUser.id,
+                photoUrl: _testUser.photoUrl,
+                idToken: '',
+              ),
+              accessToken: '',
+              grantedScopes: <String>[],
+            ),
+          ),
+        );
+
+        await googleSignIn.serverAuthorizationTokensForScopes(
+          const ServerAuthorizationTokensForScopesParameters(
+            request: AuthorizationRequestDetails(
+              scopes: scopes,
+              userId: null,
+              email: null,
+              promptIfUnauthorized: true,
+            ),
+          ),
+        );
+
+        // With no user ID provided to serverAuthorizationTokensForScopes, the
+        // implementation should attempt to restore an existing sign-in, and then
+        // when that throws due to an expired/revoked token, prompt for a combined authn+authz.
+        // https://github.com/flutter/flutter/issues/184134
+        verify(mockApi.restorePreviousSignIn());
+        verify(mockApi.signIn(scopes, null));
+      },
+    );
+
     test('attempts to authenticate if no user is provided or already signed in '
         'and interaction is allowed', () async {
       const scopes = <String>['a', 'b'];