diff --git a/cucyuqing/dbscan.py b/cucyuqing/dbscan.py
index f782958..6398b4e 100644
--- a/cucyuqing/dbscan.py
+++ b/cucyuqing/dbscan.py
@@ -44,9 +44,9 @@ async def run_dbscan() -> DBScanResult:
             SELECT id, title, content, embedding
             FROM risk_news
             WHERE NOT embedding_updated_at IS NULL
-                AND time > now() - interval '14 day'
+                AND time > now() - interval '7 day'
             ORDER BY time desc
-            LIMIT 10000
+            LIMIT 100000
             ;"""
         )
         rows = await cur.fetchall()