diff --git a/custom_components/yandex_station/calendar.py b/custom_components/yandex_station/calendar.py
index 2cd8333..577d826 100644
--- a/custom_components/yandex_station/calendar.py
+++ b/custom_components/yandex_station/calendar.py
@@ -62,7 +62,11 @@ async def async_update(self):
             else:
                 self.next_event = None
         except Exception as e:
-            _LOGGER.warning("Не удалось загрузить будильники", exc_info=e)
+            # https://github.com/AlexxIT/YandexStation/issues/580
+            if str(e).endswith("return 500 status"):
+                _LOGGER.debug(f"Не удалось загрузить будильники: {repr(e)}")
+            else:
+                _LOGGER.warning("Не удалось загрузить будильники", exc_info=e)
 
     async def async_get_events(
         self, hass: HomeAssistant, start_date: datetime, end_date: datetime
diff --git a/custom_components/yandex_station/core/yandex_session.py b/custom_components/yandex_station/core/yandex_session.py
index 313a35a..53039ea 100644
--- a/custom_components/yandex_station/core/yandex_session.py
+++ b/custom_components/yandex_station/core/yandex_session.py
@@ -488,6 +488,8 @@ async def request(self, method: str, url: str, retry: int = 2, **kwargs):
         elif r.status == 403:
             # 403 - no x-csrf-token
             self.csrf_token = None
+        elif r.status == 500:
+            await asyncio.sleep(1)
         else:
             _LOGGER.warning(f"{url} return {r.status} status")