diff --git a/app/calculators/performance/_base.py b/app/calculators/performance/_base.py
index 8382024..3e7e149 100644
--- a/app/calculators/performance/_base.py
+++ b/app/calculators/performance/_base.py
@@ -31,6 +31,9 @@ class AvailableModes(NamedTuple):
 
 
 class PerformanceCalculator(abc.ABC):
+    def __init__(self, **kwargs) -> None:
+        pass
+
     @abc.abstractmethod
     async def get_available_modes(self) -> AvailableModes:
         raise NotImplementedError
diff --git a/app/calculators/performance/performance_server.py b/app/calculators/performance/performance_server.py
index a7210d7..6f7c96d 100644
--- a/app/calculators/performance/performance_server.py
+++ b/app/calculators/performance/performance_server.py
@@ -33,7 +33,7 @@ class AvailableRulesetResp(TypedDict):
 
 
 class PerformanceServerPerformanceCalculator(BasePerformanceCalculator):
-    def __init__(self, server_url: str = "http://localhost:5225") -> None:
+    def __init__(self, server_url: str = "http://localhost:5225", **kwargs) -> None:  # noqa: ARG002
         self.server_url = server_url
 
         self._available_modes: AvailableModes | None = None