diff --git a/README.md b/README.md
index f9cba391..7e1f4718 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,7 @@ export interface UploadInput {
   data?: { [key: string]: string | Blob }; // custom data sent with the file
   headers?: { [key: string]: string }; // custom headers
   concurrency?: number; // concurrency of how many files can be uploaded in parallel (default is 0 which means unlimited)
+  withCredentials?: boolean; // apply withCredentials option
 }
 ```