diff --git a/backend/internal/video/popularity_cache.go b/backend/internal/video/popularity_cache.go
index b3ffaae..eb89a17 100644
--- a/backend/internal/video/popularity_cache.go
+++ b/backend/internal/video/popularity_cache.go
@@ -15,6 +15,7 @@ func UpdatePopularityCache(ctx context.Context, cache *rediscache.Client, id uin
 	}
 
 	_ = cache.Del(context.Background(), cache.Key("video:detail:id=%d", id))
+	_ = cache.Del(context.Background(), cache.Key("video:entity:%d", id))
 
 	now := time.Now().UTC().Truncate(time.Minute)
 	windowKey := cache.Key("hot:video:1m:%s", now.Format("200601021504"))