diff --git a/server/main-api/migrations/20240703163202_more_complete_calendar.up.sql b/server/main-api/migrations/20240703163202_more_complete_calendar.up.sql
index 74335e1ea..3ecd939ab 100644
--- a/server/main-api/migrations/20240703163202_more_complete_calendar.up.sql
+++ b/server/main-api/migrations/20240703163202_more_complete_calendar.up.sql
@@ -1,4 +1,9 @@
 -- Add up migration script here
+-- these are pretty major changes => we should re-download everything
+UPDATE en SET last_calendar_scrape_at = null WHERE last_calendar_scrape_at is not null;
+UPDATE de SET last_calendar_scrape_at = null WHERE last_calendar_scrape_at is not null;
+delete from calendar where 1=1
+
 ALTER TABLE calendar RENAME COLUMN stp_title_de TO title_de;
 ALTER TABLE calendar RENAME COLUMN stp_title_en TO title_en;