diff --git a/README.md b/README.md
index d679610..af3f6f9 100644
--- a/README.md
+++ b/README.md
@@ -213,6 +213,7 @@ const options = {
   }) => {},                       // object to the method's first parameter.
   onUpdate: (event) => {          // Called each time the Upload Widget's list of files change.
     // event.pendingFiles         // Array of files that are either uploading or queued.
+    // event.failedFiles          // Array of files that failed to upload (due to network or validation reasons).
     // event.uploadedFiles        // Array of files that have been uploaded and not removed.
   },
   onPreUpload: async file => ({
diff --git a/package.json b/package.json
index 9476daa..4869725 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@bytescale/upload-widget-react",
-  "version": "4.9.3",
+  "version": "4.10.0",
   "author": "Bytescale <hello@bytescale.com> (https://www.bytescale.com)",
   "description": "React File Upload UI Widget — Lightweight & supports: drag and drop, multiple uploads, image cropping, customization & more 🚀 Comes with Cloud Storage 🌐",
   "license": "MIT",