diff --git a/tradein-mvp/backend/data/sql/073_normalize_repair_state.sql b/tradein-mvp/backend/data/sql/073_normalize_repair_state.sql
index 812d113d..cf3d77ec 100644
--- a/tradein-mvp/backend/data/sql/073_normalize_repair_state.sql
+++ b/tradein-mvp/backend/data/sql/073_normalize_repair_state.sql
@@ -10,6 +10,8 @@
 -- Idempotent: CASE охватывает уже нормализованные значения (pass-through).
 -- Issue: #621
 
+BEGIN;
+
 UPDATE listings
 SET repair_state = CASE repair_state
     -- ── уже нормализованные (pass-through) ───────────────────────────────────
@@ -39,3 +41,5 @@ SET repair_state = CASE repair_state
     ELSE NULL
 END
 WHERE repair_state IS NOT NULL;
+
+COMMIT;