diff --git a/src/types.d.ts b/src/types.d.ts
index b805e09..2075337 100644
--- a/src/types.d.ts
+++ b/src/types.d.ts
@@ -1,3 +1,5 @@
+import { Readable as NodeReadableStream } from 'stream'
+
 interface ProgressStatus {
   total: number
   loaded: number
@@ -6,7 +8,9 @@ interface ProgressStatus {
 
 export interface ProgressFn { (status: ProgressStatus): void }
 
-export interface FetchOptions extends RequestInit {
+type Override<T, R> = Omit<T, keyof R> & R
+
+export type FetchOptions = Override<RequestInit, {
   /**
    * Extended body with support for node readable stream
    */
@@ -29,7 +33,7 @@ export interface FetchOptions extends RequestInit {
    */
   onDownloadProgress?: ProgressFn
   overrideMimeType?: string
-}
+}>
 
 export interface HTTPOptions extends FetchOptions {
   json?: any