diff --git a/extensions/postLoadDelay/postLoadDelay.js b/extensions/postLoadDelay/postLoadDelay.js
index a30c6e232..123c6927e 100644
--- a/extensions/postLoadDelay/postLoadDelay.js
+++ b/extensions/postLoadDelay/postLoadDelay.js
@@ -3,6 +3,8 @@
  */
 "use strict";
 
+const { setTimeout } = require("timers/promises");
+
 module.exports = function (phantomas) {
   // e.g. --post-load-delay 5
   var delay = parseInt(phantomas.getParam("post-load-delay"), 10);
@@ -14,9 +16,9 @@ module.exports = function (phantomas) {
   // https://github.com/GoogleChrome/puppeteer/blob/v1.11.0/docs/api.md#framewaitforselectororfunctionortimeout-options-args
   phantomas.log("Will wait %d second(s) after load", delay);
 
-  phantomas.on("beforeClose", (page) => {
+  phantomas.on("beforeClose", async (page) => {
     phantomas.log("Sleeping for %d seconds", delay);
 
-    return page.waitForTimeout(delay * 1000);
+    return setTimeout(delay * 1000);
   });
 };