diff --git a/stdlib/antigravity.pyi b/stdlib/antigravity.pyi
index e30917511030..3986e7d1c9f2 100644
--- a/stdlib/antigravity.pyi
+++ b/stdlib/antigravity.pyi
@@ -1 +1,3 @@
-def geohash(latitude: float, longitude: float, datedow: bytes) -> None: ...
+from _typeshed import ReadableBuffer
+
+def geohash(latitude: float, longitude: float, datedow: ReadableBuffer) -> None: ...