diff --git a/packages/prisma/migrations/20250404225129_backfill_userid_from_user_eventtype/migration.sql b/packages/prisma/migrations/20250404225129_backfill_userid_from_user_eventtype/migration.sql
new file mode 100644
index 0000000000..cfafd05ab4
--- /dev/null
+++ b/packages/prisma/migrations/20250404225129_backfill_userid_from_user_eventtype/migration.sql
@@ -0,0 +1,6 @@
+UPDATE "EventType"
+SET "userId" = "_user_eventtype"."B"
+FROM "_user_eventtype"
+WHERE "EventType"."userId" IS NULL
+AND "EventType"."teamId" IS NULL
+AND "EventType".id = "_user_eventtype"."A";