diff --git a/bentoctl/deployment_config.py b/bentoctl/deployment_config.py
index e35821a..9fe3235 100644
--- a/bentoctl/deployment_config.py
+++ b/bentoctl/deployment_config.py
@@ -243,7 +243,7 @@ def generate(self, destination_dir=os.curdir, values_only=False):
 
         return generated_files
 
-    def _prepare_bento_dir(self) -> t.Generator[str, None, None]:
+    def _prepare_bento_dir(self) -> None:
         """
         Copy models in the bento before deployment.
         """