diff --git a/dakiny_bot/logger.py b/dakiny_bot/logger.py
index 6c7765e..1547542 100644
--- a/dakiny_bot/logger.py
+++ b/dakiny_bot/logger.py
@@ -7,5 +7,7 @@ import sys
 dakiny_logger = logging.getLogger("default")
 dakiny_logger.setLevel(logging.DEBUG if os.getenv("DEBUG") == "true" else logging.INFO)
 handler = logging.StreamHandler(sys.stdout)
-handler.setFormatter(logging.Formatter("%(asctime)s:%(levelname)s:%(name)s: %(message)s"))
+handler.setFormatter(
+    logging.Formatter("%(asctime)s:%(levelname)s [%(filename)s:%(lineno)s - %(funcName)20s() ] %(message)s")
+)
 dakiny_logger.addHandler(handler)