diff --git a/ai/models.py b/ai/models.py
index 2e438f0..e86a142 100644
--- a/ai/models.py
+++ b/ai/models.py
@@ -47,6 +47,7 @@ class AiShow(models.Model):
     result = models.TextField()
     message = models.TextField()
     created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
     take_times = models.IntegerField(default=0)
     take_tokens = models.CharField(default='', max_length=2000)