diff --git a/src/sentry/tasks/embeddings_grouping/backfill_seer_grouping_records_for_project.py b/src/sentry/tasks/embeddings_grouping/backfill_seer_grouping_records_for_project.py
index 9a62146e02a30..6d5fe8bd170f1 100644
--- a/src/sentry/tasks/embeddings_grouping/backfill_seer_grouping_records_for_project.py
+++ b/src/sentry/tasks/embeddings_grouping/backfill_seer_grouping_records_for_project.py
@@ -43,6 +43,7 @@
     soft_time_limit=60 * 15,
     time_limit=60 * 15 + 5,
     acks_late=True,
+    reject_on_worker_lost=True,
 )
 def backfill_seer_grouping_records_for_project(
     current_project_id: int,