diff --git a/src/puter-js/index.d.ts b/src/puter-js/index.d.ts
index ea87fb11d..aaac57afa 100644
--- a/src/puter-js/index.d.ts
+++ b/src/puter-js/index.d.ts
@@ -227,7 +227,7 @@ interface FileSystem {
     rename(path: string, newName: string): Promise<FSItem>;
     space(): Promise<SpaceInfo>;
     stat(path: string): Promise<FSItem>;
-    upload(items: FileList | File[] | Blob[], dirPath?: string, options?: object): Promise<FSItem[]>;
+    upload(items: FileList | File[] | Blob[], dirPath?: string, options?: UploadOptions): Promise<FSItem[]>;
     write(path: string, data?: string | File | Blob, options?: WriteOptions): Promise<FSItem>;
 }
 
@@ -268,6 +268,12 @@ interface WriteOptions {
     createMissingParents?: boolean;
 }
 
+interface UploadOptions {
+    overwrite?: boolean;
+    dedupeName?: boolean;
+    name?: string;
+}
+
 interface SpaceInfo {
     capacity: number;
     used: number;