diff --git a/data_platform/daily_all_update.py b/data_platform/daily_all_update.py
index e06c05ec..9f351379 100644
--- a/data_platform/daily_all_update.py
+++ b/data_platform/daily_all_update.py
@@ -669,6 +669,8 @@ def run_15min_update(codes: List[str]) -> dict:
     health = SourceHealthMonitor()
 
     for i, code in enumerate(todo):
+        if i < 3:
+            print(f"[DEBUG] 15min loop i={i} code={code}", flush=True)
         if source_aborted:
             break