diff --git a/index.d.ts b/index.d.ts
index f2127d443f..1f82f5080d 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -125,8 +125,8 @@ export interface AxiosRequestConfig<D = any> {
   responseEncoding?: responseEncoding | string;
   xsrfCookieName?: string;
   xsrfHeaderName?: string;
-  onUploadProgress?: (progressEvent: any) => void;
-  onDownloadProgress?: (progressEvent: any) => void;
+  onUploadProgress?: (progressEvent: ProgressEvent) => void;
+  onDownloadProgress?: (progressEvent: ProgressEvent) => void;
   maxContentLength?: number;
   validateStatus?: ((status: number) => boolean) | null;
   maxBodyLength?: number;