diff --git a/icalendar_timeseries_server/cal.py b/icalendar_timeseries_server/cal.py
index 46e2c03..8a6e11c 100644
--- a/icalendar_timeseries_server/cal.py
+++ b/icalendar_timeseries_server/cal.py
@@ -100,7 +100,6 @@ def _scrape_calendar(name: str, config: CalendarConfig, start: datetime, end: da
                     duration = element.get('duration').dt
             todos.append(Todo(name, element, dtstart, dtstart + duration))
 
-
     with _SCRAPE_CACHE_LOCK:
         _EVENT_SCRAPE_CACHE[name] = events
         _TODO_SCRAPE_CACHE[name] = todos