diff --git a/upload-files.js b/upload-files.js
index 175e460..33abf2a 100644
--- a/upload-files.js
+++ b/upload-files.js
@@ -36,6 +36,8 @@ export const upload = function(superClass) {
           formData.append(files[i].name, files[i]);
         }
 
+        document.dispatchEvent(new CustomEvent('before-request', { detail: request, bubbles: true, composed: true }));
+
         request.send(formData);
       });
     }