diff --git a/convert.py b/convert.py
index 5cc3f6e66f6bb..6c89b5ecc7f45 100755
--- a/convert.py
+++ b/convert.py
@@ -530,7 +530,7 @@ def validate_conversion_to(self, data_type: DataType) -> None:
             raise ValueError(f'Cannot validate conversion from {self.data_type} to {data_type}.')
 
 
-LazyModel = dict[str, LazyTensor]
+LazyModel: TypeAlias = 'dict[str, LazyTensor]'
 
 
 @dataclass