diff --git a/tosfs/consts.py b/tosfs/consts.py
index ef41521..c3fb791 100644
--- a/tosfs/consts.py
+++ b/tosfs/consts.py
@@ -33,4 +33,4 @@
 
 # environment variable names
 ENV_NAME_TOSFS_LOGGING_LEVEL = "TOSFS_LOGGING_LEVEL"
-TOSFS_LOG_FORMAT = "%(asctime)s %(name)s [%(levelname)s] %(funcName)s : %(message)s"
+TOSFS_LOG_FORMAT = "%(asctime)s %(name)s [%(levelname)s] %(filename)s:%(lineno)d %(funcName)s : %(message)s"  # noqa: E501