diff --git a/src/repositories/RedisParkingRepository.ts b/src/repositories/RedisParkingRepository.ts
index d71a953..dcb96e8 100644
--- a/src/repositories/RedisParkingRepository.ts
+++ b/src/repositories/RedisParkingRepository.ts
@@ -151,6 +151,8 @@ export class RedisParkingRepository extends BaseRedisRepository implements Parki
       await this.redisClient.sendCommand([
         'TS.CREATE',
         timeSeriesKey,
+        'RETENTION',
+        '2678400000',  // one month
         'LABELS',
         'structureId',
         structureId