diff --git a/spacy/tokens/doc.pyi b/spacy/tokens/doc.pyi
index 231b9b84d..517a8359d 100644
--- a/spacy/tokens/doc.pyi
+++ b/spacy/tokens/doc.pyi
@@ -206,3 +206,6 @@ class Doc:
     ) -> Ints2d: ...
     @staticmethod
     def _get_array_attrs() -> Tuple[Any]: ...
+
+def get_fnv1a_hash(input: bytes) -> int: ...
+