diff --git a/nu_plugin_bin_reader.py b/nu_plugin_bin_reader.py
index cba2fcf..3e09fba 100755
--- a/nu_plugin_bin_reader.py
+++ b/nu_plugin_bin_reader.py
@@ -54,6 +54,9 @@ def signatures():
                         "var_id": None,
                     },
                 ],
+                "vectorizes_over_list": False,
+                "input_output_types": [],
+                "allow_variants_without_examples": False,
                 "optional_positional": [],
                 # FIXME: the rest positional is required, and it's not empty, I don't know if it's ok.
                 "rest_positional": {