diff --git a/metagpt/config2.py b/metagpt/config2.py
index 1942e5ef5..84b6059ef 100644
--- a/metagpt/config2.py
+++ b/metagpt/config2.py
@@ -178,3 +178,4 @@ def merge_dict(dicts: Iterable[Dict]) -> Dict:
 
 
 _CONFIG_CACHE = {}
+config = Config.default()