diff --git a/extensions/tavily/src/tavily-client.test.ts b/extensions/tavily/src/tavily-client.test.ts
index 02a38565234..74f0390f979 100644
--- a/extensions/tavily/src/tavily-client.test.ts
+++ b/extensions/tavily/src/tavily-client.test.ts
@@ -45,7 +45,7 @@ describe("tavily client X-Client-Source header", () => {
     await runTavilySearch({ query: "test query" });
 
     expect(postTrustedWebToolsJson).toHaveBeenCalledOnce();
-    const params = postTrustedWebToolsJson.mock.calls.at(0)?.[0];
+    const params = postTrustedWebToolsJson.mock.calls[0]?.[0];
     expect(params.extraHeaders).toEqual({ "X-Client-Source": "openclaw" });
   });
 
@@ -53,7 +53,7 @@ describe("tavily client X-Client-Source header", () => {
     await runTavilyExtract({ urls: ["https://example.com"] });
 
     expect(postTrustedWebToolsJson).toHaveBeenCalledOnce();
-    const params = postTrustedWebToolsJson.mock.calls.at(0)?.[0];
+    const params = postTrustedWebToolsJson.mock.calls[0]?.[0];
     expect(params.extraHeaders).toEqual({ "X-Client-Source": "openclaw" });
   });
 });