diff --git a/express-zod-api/src/graceful-helpers.ts b/express-zod-api/src/graceful-helpers.ts
index 02b41da53..717dc36d1 100644
--- a/express-zod-api/src/graceful-helpers.ts
+++ b/express-zod-api/src/graceful-helpers.ts
@@ -32,8 +32,8 @@ export const isEncrypted = (socket: Socket): boolean =>
 export const weAreClosed: http.RequestListener = ({}, res) =>
   void (!res.headersSent && res.setHeader("connection", "close"));
 
-export const closeAsync = (server: Server) =>
-  new Promise<void>(
-    (resolve, reject) =>
-      void server.close((error) => (error ? reject(error) : resolve())),
-  );
+export const closeAsync = (server: Server) => {
+  const { promise, resolve, reject } = Promise.withResolvers<void>();
+  server.close((error) => (error ? reject(error) : resolve()));
+  return promise;
+};
diff --git a/express-zod-api/src/middleware.ts b/express-zod-api/src/middleware.ts
index 2755e9c81..33e6477b0 100644
--- a/express-zod-api/src/middleware.ts
+++ b/express-zod-api/src/middleware.ts
@@ -122,14 +122,15 @@ export class ExpressMiddleware<
     } = {},
   ) {
     super({
-      handler: async ({ request, response }) =>
-        new Promise<RET>((resolve, reject) => {
-          const next = (err?: unknown) => {
-            if (err && err instanceof Error) return reject(transformer(err));
-            resolve(provider(request as R, response as S));
-          };
-          nativeMw(request as R, response as S, next)?.catch(next);
-        }),
+      handler: async ({ request, response }) => {
+        const { promise, resolve, reject } = Promise.withResolvers<RET>();
+        const next = (err?: unknown) => {
+          if (err && err instanceof Error) return reject(transformer(err));
+          resolve(provider(request as R, response as S));
+        };
+        nativeMw(request as R, response as S, next)?.catch(next);
+        return promise;
+      },
     });
   }
 }
diff --git a/express-zod-api/tests/graceful-shutdown.spec.ts b/express-zod-api/tests/graceful-shutdown.spec.ts
index e8824f2a9..b8b5a275d 100644
--- a/express-zod-api/tests/graceful-shutdown.spec.ts
+++ b/express-zod-api/tests/graceful-shutdown.spec.ts
@@ -8,26 +8,28 @@ import { givePort } from "../../tools/ports";
 import { signCert } from "./ssl-helpers";
 
 describe("monitor()", () => {
-  const makeHttpServer = (handler: http.RequestListener) =>
-    new Promise<[http.Server, number]>((resolve) => {
-      const subject = http.createServer(handler);
-      const port = givePort();
-      subject.listen(port, () => resolve([subject, port]));
-    });
+  const makeHttpServer = (handler: http.RequestListener) => {
+    const { promise, resolve } = Promise.withResolvers<[http.Server, number]>();
+    const subject = http.createServer(handler);
+    const port = givePort();
+    subject.listen(port, () => resolve([subject, port]));
+    return promise;
+  };
 
-  const makeHttpsServer = (handler: http.RequestListener) =>
-    new Promise<[https.Server, number]>((resolve) => {
-      const subject = https.createServer(signCert(), handler);
-      const port = givePort();
-      subject.listen(port, () => resolve([subject, port]));
-    });
+  const makeHttpsServer = (handler: http.RequestListener) => {
+    const { promise, resolve } =
+      Promise.withResolvers<[https.Server, number]>();
+    const subject = https.createServer(signCert(), handler);
+    const port = givePort();
+    subject.listen(port, () => resolve([subject, port]));
+    return promise;
+  };
 
-  const getConnections = (server: http.Server) =>
-    new Promise<number>((resolve, reject) => {
-      server.getConnections((err, count) =>
-        err ? reject(err) : resolve(count),
-      );
-    });
+  const getConnections = (server: http.Server) => {
+    const { promise, resolve, reject } = Promise.withResolvers<number>();
+    server.getConnections((err, count) => (err ? reject(err) : resolve(count)));
+    return promise;
+  };
 
   test(
     "shuts down HTTP server with no connections",