diff --git a/dacapo/blockwise/predict_worker.py b/dacapo/blockwise/predict_worker.py
index 6c3822cb2..05c08ae3c 100644
--- a/dacapo/blockwise/predict_worker.py
+++ b/dacapo/blockwise/predict_worker.py
@@ -46,7 +46,6 @@ def cli(log_level):
 @click.option(
     "-i",
     "--iteration",
-    required=True,
     type=Optional[int],
     help="The training iteration of the model to use for prediction.",
     default=None,