diff --git a/app/app.py b/app/app.py
index 3a3ffdb64c..95a5eca3d0 100644
--- a/app/app.py
+++ b/app/app.py
@@ -645,7 +645,7 @@ async def lifespan(app: FastAPI) -> AsyncGenerator[LifespanState]:
         title="Hyperion",
         version=settings.HYPERION_VERSION,
         lifespan=lifespan,
-        custom_generate_unique_id=use_route_path_as_operation_id,
+        generate_unique_id_function=use_route_path_as_operation_id,
     )
     app.include_router(api.api_router)