diff --git a/lib/src/downloader.dart b/lib/src/downloader.dart
index 22ae52f9..439b67d9 100644
--- a/lib/src/downloader.dart
+++ b/lib/src/downloader.dart
@@ -4,7 +4,7 @@ import 'package:archive/archive.dart';
 import 'package:http/http.dart' as http;
 import 'package:path/path.dart' as p;
 
-const _lastVersion = '126.0.6478.62';
+const _lastVersion = '126.0.6478.63';
 
 class DownloadedBrowserInfo {
   final String executablePath;
diff --git a/tool/json/browser_protocol.json b/tool/json/browser_protocol.json
index 304ff807..25c173e3 100644
--- a/tool/json/browser_protocol.json
+++ b/tool/json/browser_protocol.json
@@ -1754,7 +1754,9 @@
                         "ClientMetadataNoResponse",
                         "ClientMetadataInvalidResponse",
                         "ClientMetadataInvalidContentType",
+                        "IdpNotPotentiallyTrustworthy",
                         "DisabledInSettings",
+                        "DisabledInFlags",
                         "ErrorFetchingSignin",
                         "InvalidSigninResponse",
                         "AccountsHttpNotFound",
@@ -1777,6 +1779,7 @@
                         "NotSignedInWithIdp",
                         "MissingTransientUserActivation",
                         "ReplacedByButtonMode",
+                        "InvalidFieldsSpecified",
                         "RelyingPartyOriginIsOpaque",
                         "TypeNotMatching"
                     ]
@@ -2711,6 +2714,12 @@
                             "optional": true,
                             "type": "boolean"
                         },
+                        {
+                            "name": "allowWithoutGesture",
+                            "description": "For \"fullscreen\" permission, must specify allowWithoutGesture:true.",
+                            "optional": true,
+                            "type": "boolean"
+                        },
                         {
                             "name": "panTiltZoom",
                             "description": "For \"camera\" permission, may specify panTiltZoom.",