diff --git a/crossfit_booker.py b/crossfit_booker.py
index 7582fb8..9d68eb9 100644
--- a/crossfit_booker.py
+++ b/crossfit_booker.py
@@ -33,7 +33,7 @@ APPLICATION_ID = "81560887"
 CATEGORY_ID = "677"  # Activity category ID for CrossFit
 TIMEZONE = "Europe/Paris"  # Adjust to your timezone
 TARGET_RESERVATION_TIME = "20:01"  # When bookings open (8 PM)
-BOOKING_WINDOW_END_DELTA_MINUTES = 10 # End window book session
+BOOKING_WINDOW_END_DELTA_MINUTES = 30 # End window book session
 DEVICE_TYPE = "3"
 
 # Retry configuration