diff --git a/backend/b2/b2.go b/backend/b2/b2.go
index c622c7ba7..d69c47f44 100644
--- a/backend/b2/b2.go
+++ b/backend/b2/b2.go
@@ -1816,6 +1816,7 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 		Method:  "POST",
 		RootURL: upload.UploadURL,
 		Body:    in,
+		Options: options,
 		ExtraHeaders: map[string]string{
 			"Authorization":  upload.AuthorizationToken,
 			"X-Bz-File-Name": urlEncode(o.fs.opt.Enc.FromStandardPath(bucketPath)),