Update app.py

app.py

@@ -21,7 +21,7 @@ def middchat(bot_cache: BotCache, message: str, history: List[Tuple[str, str]])
     """
     # get the bot options
     # for new chats, fetch new bots
-    if message == "update bots":
+    if message == "update bots" or len(history) <= 1:
         all_bots = bot_cache.update()
     else:
         all_bots = bot_cache.bots