diff --git a/data_platform/daily_all_update.py b/data_platform/daily_all_update.py
index bec02312..a9832a31 100644
--- a/data_platform/daily_all_update.py
+++ b/data_platform/daily_all_update.py
@@ -165,7 +165,8 @@ def get_daily_last_date(code: str) -> str:
             try:
                 df = pd.read_parquet(fpath, columns=["date"])
                 if not df.empty:
-                    return str(df["date"].max())[:10]
+                    val = df["date"].max()
+                    return str(val)[:10]
             except Exception:
                 pass
     return ""