From 1c3b9f457300e888e65ad93ee79efa901446b0cf Mon Sep 17 00:00:00 2001
From: Ronnie Dutta <61982285+MetRonnie@users.noreply.github.com>
Date: Thu, 5 Nov 2026 16:59:14 +0000
Subject: [PATCH] Fix "WARNING" not accepted as valid log_level

---
 traitlets/config/application.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/traitlets/config/application.py b/traitlets/config/application.py
index 2027bcb1..3fa3ec10 100644
--- a/traitlets/config/application.py
+++ b/traitlets/config/application.py
@@ -203,7 +203,7 @@ def _classes_inc_parents(
 
     # The log level for the application
     log_level = Enum(
-        (0, 10, 20, 30, 40, 50, "DEBUG", "INFO", "WARN", "ERROR", "CRITICAL"),
+        (0, 10, 20, 30, 40, 50, "DEBUG", "INFO", "WARN", "WARNING", "ERROR", "CRITICAL"),
         default_value=logging.WARNING,
         help="Set the log level by value or name.",
     ).tag(config=True)