diff --git a/tests/test_operations.py b/tests/test_operations.py
index 281cc0dac..148b8a2f8 100644
--- a/tests/test_operations.py
+++ b/tests/test_operations.py
@@ -64,7 +64,7 @@ def test_end_to_end(self):
 
         # Create the operation with the `initial_pb` but when it asks for an update
         # return the `final_pb`.
-        def refresh():
+        def refresh(*_, **__):
             return final_pb
 
         # This is the base Operation class
@@ -133,7 +133,7 @@ def make_metadata(completed_steps):
         ops = gen_operations()
         initial_pb = next(ops)
 
-        def refresh():
+        def refresh(*_, **__):
             """get the next status on each refresh"""
             return next(ops)