diff --git a/eland/ml/pytorch/transformers.py b/eland/ml/pytorch/transformers.py
index 89e4634..9b2b78e 100644
--- a/eland/ml/pytorch/transformers.py
+++ b/eland/ml/pytorch/transformers.py
@@ -578,7 +578,7 @@ class TransformerModel:
         model_id: str,
         task_type: str,
         *,
-        es_version: Optional[Tuple[int, int, int]],
+        es_version: Optional[Tuple[int, int, int]] = None,
         quantize: bool = False,
     ):
         """