diff --git a/packages/adapters/openclaw-gateway/src/server/execute.ts b/packages/adapters/openclaw-gateway/src/server/execute.ts
index 570f420850..91bef0081e 100644
--- a/packages/adapters/openclaw-gateway/src/server/execute.ts
+++ b/packages/adapters/openclaw-gateway/src/server/execute.ts
@@ -86,7 +86,7 @@ type GatewayClientRequestOptions = {
   expectFinal?: boolean;
 };
 
-const PROTOCOL_VERSION = 3;
+const PROTOCOL_VERSION = 4;
 const DEFAULT_SCOPES = ["operator.admin"];
 const DEFAULT_CLIENT_ID = "gateway-client";
 const DEFAULT_CLIENT_MODE = "backend";
diff --git a/packages/adapters/openclaw-gateway/src/server/test.ts b/packages/adapters/openclaw-gateway/src/server/test.ts
index af4c74d197..fd8f9f6100 100644
--- a/packages/adapters/openclaw-gateway/src/server/test.ts
+++ b/packages/adapters/openclaw-gateway/src/server/test.ts
@@ -145,8 +145,8 @@ async function probeGateway(input: {
             id: connectId,
             method: "connect",
             params: {
-              minProtocol: 3,
-              maxProtocol: 3,
+              minProtocol: 4,
+              maxProtocol: 4,
               client: {
                 id: "gateway-client",
                 version: "paperclip-probe",