diff --git a/lib/runtime/gateway_runtime_protocol.dart b/lib/runtime/gateway_runtime_protocol.dart
index b3a66bb1..432b1a8e 100644
--- a/lib/runtime/gateway_runtime_protocol.dart
+++ b/lib/runtime/gateway_runtime_protocol.dart
@@ -18,7 +18,7 @@ import 'gateway_runtime_errors.dart';
 import 'gateway_runtime_helpers.dart';
 import 'gateway_runtime_core.dart';
 
-const kGatewayProtocolVersion = 3;
+const kGatewayProtocolVersion = 4;
 const kDefaultOperatorConnectScopes = <String>[
   'operator.admin',
   'operator.read',
diff --git a/test/runtime/gateway_runtime_bridge_skills_test.dart b/test/runtime/gateway_runtime_bridge_skills_test.dart
index a2272db2..bd80d942 100644
--- a/test/runtime/gateway_runtime_bridge_skills_test.dart
+++ b/test/runtime/gateway_runtime_bridge_skills_test.dart
@@ -6,6 +6,7 @@ import 'package:xworkmate/runtime/device_identity_store.dart';
 import 'package:xworkmate/runtime/gateway_acp_client.dart';
 import 'package:xworkmate/runtime/gateway_runtime.dart';
 import 'package:xworkmate/runtime/runtime_controllers.dart';
+import 'package:xworkmate/runtime/runtime_models.dart';
 import 'package:xworkmate/runtime/secure_config_store.dart';
 
 void main() {
@@ -129,9 +130,10 @@ void main() {
         endpointResolver: () => Uri.parse('http://127.0.0.1:${server.port}'),
         authorizationResolver: (_) async => 'bridge-token',
       );
+      final identityStore = DeviceIdentityStore(store);
       final runtime = GatewayRuntime(
         store: store,
-        identityStore: DeviceIdentityStore(store),
+        identityStore: identityStore,
         sessionClient: GatewayAcpRuntimeSessionClient(client: acpClient),
       );
       await runtime.initialize();
@@ -142,6 +144,18 @@ void main() {
         await tempDir.delete(recursive: true);
       });
 
+      final directConnectParams = await runtime.buildConnectParamsInternal(
+        runtime,
+        profile: GatewayConnectionProfile.defaults(),
+        identity: await identityStore.loadOrCreate(),
+        nonce: 'nonce',
+        authToken: 'bridge-token',
+        authDeviceToken: '',
+        authPassword: '',
+      );
+      expect(directConnectParams['minProtocol'], kGatewayProtocolVersion);
+      expect(directConnectParams['maxProtocol'], kGatewayProtocolVersion);
+
       final controller = SkillsController(runtime);
       await controller.refresh(agentId: 'main');