diff --git a/apps/OpenSign/src/App.js b/apps/OpenSign/src/App.js
index d21fc6074..66ad17926 100644
--- a/apps/OpenSign/src/App.js
+++ b/apps/OpenSign/src/App.js
@@ -29,7 +29,11 @@ const Opensigndrive = lazy(() => import("./pages/Opensigndrive"));
 const ManageSign = lazy(() => import("./pages/Managesign"));
 const GenerateToken = lazy(() => import("./pages/GenerateToken"));
 const Webhook = lazy(() => import("./pages/Webhook"));
-pdfjs.GlobalWorkerOptions.workerSrc = `//cdnjs.cloudflare.com/ajax/libs/pdf.js/${pdfjs.version}/pdf.worker.min.mjs`;
+
+pdfjs.GlobalWorkerOptions.workerSrc = new URL(
+  "pdfjs-dist/legacy/build/pdf.worker.min.mjs",
+  import.meta.url
+).toString();
 const Loader = () => {
   return (
     <div
diff --git a/apps/OpenSign/src/index.js b/apps/OpenSign/src/index.js
index 3f3131a15..f11064560 100644
--- a/apps/OpenSign/src/index.js
+++ b/apps/OpenSign/src/index.js
@@ -16,6 +16,7 @@ import {
 import DragElement from "./components/pdf/DragElement";
 import TagManager from "react-gtm-module";
 import Parse from "parse";
+import './polyfills'
 const appId = process.env.REACT_APP_APPID
   ? process.env.REACT_APP_APPID
   : "opensign";
diff --git a/apps/OpenSign/src/polyfills.js b/apps/OpenSign/src/polyfills.js
new file mode 100644
index 000000000..fb63675d1
--- /dev/null
+++ b/apps/OpenSign/src/polyfills.js
@@ -0,0 +1,16 @@
+// below code is used to handle undefined Promise.withResolvers for safari
+if (typeof Promise.withResolvers === "undefined") {
+  Promise.withResolvers = function () {
+    let resolve, reject;
+    const promise = new Promise((res, rej) => {
+      resolve = res;
+      reject = rej;
+    });
+    return { promise, resolve, reject };
+  };
+}
+
+// Usage:
+// const { promise, resolve, reject } = Promise.withResolvers()
+// console.log(promise, resolve, reject) // Promise { <pending> } [Function (anonymous)] [Function (anonymous)]
+// ... Do something async and then call resolve or reject!
\ No newline at end of file