diff --git a/dune_client/api/extensions.py b/dune_client/api/extensions.py
index ba64354..8944116 100644
--- a/dune_client/api/extensions.py
+++ b/dune_client/api/extensions.py
@@ -181,7 +181,7 @@ def upload_csv(self, table_name: str, data: str, description: str = "") -> bool:
         except KeyError as err:
             raise DuneError(response_json, "upload_csv response", err) from err
 
-    def download_csv(self, query: QueryBase | str | int) -> ExecutionResultCSV:
+    def download_csv(self, query: Union[QueryBase, str, int]) -> ExecutionResultCSV:
         """
         Almost like an alias for `get_latest_results` but for the csv endpoint.
         https://dune.com/docs/api/api-reference/get-results/latest-results
diff --git a/dune_client/query.py b/dune_client/query.py
index 74e5b43..c961cc1 100644
--- a/dune_client/query.py
+++ b/dune_client/query.py
@@ -10,7 +10,7 @@
 
 
 def parse_query_object_or_id(
-    query: QueryBase | str | int,
+    query: Union[QueryBase, str, int],
 ) -> tuple[dict[str, str] | None, int]:
     """
     Users are allowed to pass QueryBase or ID into some functions.