diff --git a/src/de/holidays/holidays.school.by.csv b/src/de/holidays/holidays.school.by.csv
index e3ed0fb..d0cf1dc 100644
--- a/src/de/holidays/holidays.school.by.csv
+++ b/src/de/holidays/holidays.school.by.csv
@@ -37,7 +37,7 @@ f3b90493-d141-4aab-ac30-37084db988c3;DE;2024-12-23;2025-01-03;School;DE Weihnach
 5257b2de-813a-406f-9b8e-cd56586050f2;DE;2025-03-03;2025-03-07;School;DE Frühjahrsferien,EN Spring Holidays;BY
 03cc22f2-1730-4ea4-b2dc-90d8d0f41e62;DE;2025-04-14;2025-04-25;School;DE Osterferien,EN Easter Holidays;BY
 dcda193e-7508-48e5-9da7-670a36cb3b0c;DE;2025-06-10;2025-06-20;School;DE Pfingstferien,EN Pentecost Holidays;BY
-bc2bd00a-e716-46c3-8a27-2538c777d9bd;DE;2025-08-04;2025-09-15;School;DE Sommerferien,EN Summer Holidays;BY
+bc2bd00a-e716-46c3-8a27-2538c777d9bd;DE;2025-08-01;2025-09-15;School;DE Sommerferien,EN Summer Holidays;BY
 867bf086-bdaa-4642-8fcf-4fd07f45ac08;DE;2025-11-03;2025-11-07;School;DE Herbstferien,EN Autumn Holidays;BY
 cb244bdc-ddc5-48b0-a6a4-675b57facc0e;DE;2025-11-19;;School;DE Buß- und Bettag,EN Repentance Day;BY
 fae75443-4eb3-4720-9ba2-3dcca3553820;DE;2025-12-22;2026-01-05;School;DE Weihnachtsferien,EN Christmas Holidays;BY