diff --git a/biz/checkpoint/checkpoint_biz.py b/biz/checkpoint/checkpoint_biz.py
index 74ad8df..6447757 100644
--- a/biz/checkpoint/checkpoint_biz.py
+++ b/biz/checkpoint/checkpoint_biz.py
@@ -355,6 +355,7 @@ class KadianDetector:
                         self.car_enter_pending[tid] = {
                             'first_seen': self.current_frame_idx,
                             'last_seen': self.current_frame_idx,
+                            'last_seen_time': current_time_sec,
                             'frames_count': 1,
                             'last_box': [x1, y1, x2, y2],
                         }