diff --git a/tests/control_plane/test_legacy_coordination_writer_fence.py b/tests/control_plane/test_legacy_coordination_writer_fence.py
index b80d9d9b8..0c49775e5 100644
--- a/tests/control_plane/test_legacy_coordination_writer_fence.py
+++ b/tests/control_plane/test_legacy_coordination_writer_fence.py
@@ -328,7 +328,9 @@ def test_goal_todo_add_uses_provider_at_override_root_when_promoted(
     _engage_fence(runtime_override)
     captured: dict[str, object] = {}
 
-    def missing_provider(method: str, params: dict[str, object]) -> dict[str, object]:
+    def missing_provider(
+        method: str, params: dict[str, object], **_kwargs: object
+    ) -> dict[str, object]:
         captured.update(method=method, params=params)
         return {
             "status": "missing",
diff --git a/tests/control_plane/test_todo_projection_concurrency.py b/tests/control_plane/test_todo_projection_concurrency.py
index 90fd944bb..563546907 100644
--- a/tests/control_plane/test_todo_projection_concurrency.py
+++ b/tests/control_plane/test_todo_projection_concurrency.py
@@ -243,8 +243,8 @@ def test_downlevel_runtime_cannot_acknowledge_delivery(
     args, state, first, _ = canonical_projection
     invoke = local_authority.effect_runtime_result
 
-    def without_confirmation(method, payload):
-        result = invoke(method, payload)
+    def without_confirmation(method, payload, **kwargs):
+        result = invoke(method, payload, **kwargs)
         if payload.get("projection_readback") is not None:
             result.pop("projection_readback", None)
         return result