diff --git a/fastembed/sparse/bm25.py b/fastembed/sparse/bm25.py
index 2b124070..e095c627 100644
--- a/fastembed/sparse/bm25.py
+++ b/fastembed/sparse/bm25.py
@@ -375,7 +375,7 @@ def query_embed(self, query: str | Iterable[str], **kwargs: Any) -> Iterable[Spa
             stemmed_tokens = self._stem(tokens)
             token_ids = np.array(
                 list(set(self.compute_token_id(token) for token in stemmed_tokens)),
-                dtype=np.int32,
+                dtype=np.int64,
             )
             values = np.ones_like(token_ids)
             yield SparseEmbedding(indices=token_ids, values=values)