diff --git a/packages/engine.io-client/test/webtransport.mjs b/packages/engine.io-client/test/webtransport.mjs
index 29866b31f6..94efab1c12 100644
--- a/packages/engine.io-client/test/webtransport.mjs
+++ b/packages/engine.io-client/test/webtransport.mjs
@@ -1,5 +1,4 @@
 import { Http3Server, WebTransport } from "@fails-components/webtransport";
-import { Http3EventLoop } from "@fails-components/webtransport/lib/event-loop.js";
 import expect from "expect.js";
 import { Server } from "engine.io";
 import { Socket } from "../build/esm-debug/index.js";
@@ -16,7 +15,7 @@ async function setup(opts, cb) {
   const certificate = await generateWebTransportCertificate(
     [{ shortName: "CN", value: "localhost" }],
     {
-      days: 14, // the total length of the validity period MUST NOT exceed two weeks (https://w3c.github.io/webtransport/#custom-certificate-requirements)
+      days: 13, // the total length of the validity period MUST NOT exceed two weeks (https://w3c.github.io/webtransport/#custom-certificate-requirements)
     },
   );
 
@@ -48,7 +47,10 @@ async function setup(opts, cb) {
   })();
 
   h3Server.startServer();
-  h3Server.onServerListening = () => cb({ engine, h3Server, certificate });
+
+  await h3Server.ready;
+
+  cb({ engine, h3Server, certificate });
 }
 
 function success(engine, h3server, done) {
@@ -79,10 +81,6 @@ function createSocket(port, certificate, opts) {
 }
 
 describe("WebTransport", () => {
-  after(() => {
-    Http3EventLoop.globalLoop.shutdownEventLoop(); // manually shutdown the event loop, instead of waiting 20s
-  });
-
   it("should allow to connect with WebTransport directly", (done) => {
     setup({}, ({ engine, h3Server, certificate }) => {
       const socket = createSocket(h3Server.port, certificate, {