diff --git a/stdlib/3/email/feedparser.pyi b/stdlib/3/email/feedparser.pyi
index facfd438c..8350d135d 100644
--- a/stdlib/3/email/feedparser.pyi
+++ b/stdlib/3/email/feedparser.pyi
@@ -13,5 +13,5 @@ class FeedParser:
 class BytesFeedParser:
     def __init__(self, _factory: Callable[[], Message] = ..., *,
                  policy: Policy = ...) -> None: ...
-    def feed(self, data: str) -> None: ...
+    def feed(self, data: bytes) -> None: ...
     def close(self) -> Message: ...