diff --git a/deprecated.go b/deprecated.go
index efe6774..0507906 100644
--- a/deprecated.go
+++ b/deprecated.go
@@ -160,7 +160,7 @@ func makeSendResponseFromPart(part *multipart.Part) (SendResponse, error) {
 	}
 	defer response.Body.Close()
 
-	body, err := ioutil.ReadAll(response.Body)
+	body, err := io.ReadAll(response.Body)
 	if err != nil {
 		return SendResponse{}, errors.WithStack(err)
 	}