diff --git a/rotation/config_simple.yaml b/rotation/config_simple.yaml
index f15174c..504ed68 100644
--- a/rotation/config_simple.yaml
+++ b/rotation/config_simple.yaml
@@ -13,7 +13,7 @@ asset_pools:
       name: 短债指数
       signal_source: 931862.CSI
       trade_source: 931862.CSI
-      etf_pool: [931862.CSI]
+      etf_pool: [931862.CSI, 931862.CSI, 931862.CSI, 931862.CSI]
     CL=F:
       description: WTI原油期货（2000年至今）
       group: COMMODITY