diff --git a/types/office-js/index.d.ts b/types/office-js/index.d.ts
index 2c1c8f09d7..ac0d1309e8 100644
--- a/types/office-js/index.d.ts
+++ b/types/office-js/index.d.ts
@@ -13591,7 +13591,7 @@ declare namespace Office {
          *        asyncContext: Any state data that is passed to the asynchronous method.
          * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult. The token is provided as a string in the asyncResult.value property.
          */
-        getCallbackTokenAsync(options: Office.AsyncContextOptions, callback: (result: AsyncResult) => void): void;
+        getCallbackTokenAsync(options: Office.AsyncContextOptions & { isRest?: boolean }, callback: (result: AsyncResult) => void): void;
         /**
          * Gets a string that contains a token used to get an attachment or item from an Exchange Server.
          *
@@ -60495,4 +60495,4 @@ declare namespace Visio {
 
 ////////////////////////////////////////////////////////////////
 ////////////////////// End PowerPoint APIs /////////////////////
-////////////////////////////////////////////////////////////////
\ No newline at end of file
+////////////////////////////////////////////////////////////////