diff --git a/libs/vertexai/langchain_google_vertexai/vectorstores/vectorstores.py b/libs/vertexai/langchain_google_vertexai/vectorstores/vectorstores.py
index e54855b0..780f2d16 100644
--- a/libs/vertexai/langchain_google_vertexai/vectorstores/vectorstores.py
+++ b/libs/vertexai/langchain_google_vertexai/vectorstores/vectorstores.py
@@ -333,7 +333,7 @@ def from_components(
         credentials_path: Optional[str] = None,
         embedding: Optional[Embeddings] = None,
         stream_update: bool = False,
-        datastore_client_kwargs: Dict[str, Any] | None = None,
+        datastore_client_kwargs: Optional[Dict[str, Any]] = None,
         datastore_kind: str = "document_id",
         datastore_text_property_name: str = "text",
         datastore_metadata_property_name: str = "metadata",