diff --git a/backend/tests/flow/test_provenance.py b/backend/tests/flow/test_provenance.py
index de22412..15d4207 100644
--- a/backend/tests/flow/test_provenance.py
+++ b/backend/tests/flow/test_provenance.py
@@ -74,9 +74,7 @@ def test_a_value_from_a_dashboard_says_so_rather_than_blaming_a_node():
 
     pipeline.publish(
         {"house.temp": 25.0},
-        ValueSource(
-            kind="dashboard", id="panel", label="Setpoint", detail="slider"
-        ),
+        ValueSource(kind="dashboard", id="panel", label="Setpoint", detail="slider"),
     )
 
     published = [e for e in events if e["type"] == "message_value"]