diff --git a/helpers/ruz.py b/helpers/ruz.py
index 93d26b8..27f6447 100644
--- a/helpers/ruz.py
+++ b/helpers/ruz.py
@@ -39,7 +39,7 @@ class RUZ:
             del data['stream_links']
 
     def get_schedule(self, user: dict, begin_date: datetime.datetime):
-        start_date_str = begin_date.strftime("%Y.%m.%d")
+        start_date_str = begin_date.strftime("%Y-%m-%d")
         search_str = settings.RUZ_API + f"v3/ruz/lessons?start={start_date_str}&offset=30&email={user['email']}"
         try:
             data = get(search_str)