diff --git a/tradingagents/observability.py b/tradingagents/observability.py
index 3a1f0584..93d3d3b6 100644
--- a/tradingagents/observability.py
+++ b/tradingagents/observability.py
@@ -23,7 +23,7 @@ import json
 import logging
 import threading
 import time
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from pathlib import Path
 from typing import Any, Dict, List, Optional