diff -r 136adbcefa5f Doc/library/logging.rst
--- a/Doc/library/logging.rst	Sun Jan 03 18:00:31 2016 -0800
+++ b/Doc/library/logging.rst	Sat Jan 09 16:00:28 2016 +0200
@@ -310,7 +310,7 @@
    Logger-level filtering is applied using :meth:`~Logger.filter`.
 
 
-.. method:: Logger.makeRecord(name, lvl, fn, lno, msg, args, exc_info, func=None, extra=None, sinfo=None)
+.. method:: Logger.makeRecord(name, lvl, fn, lno, msg, args, exc_info, func=None, extra=None, sinfo=None, **kwargs)
 
    This is a factory method which can be overridden in subclasses to create
    specialized :class:`LogRecord` instances.
diff -r 136adbcefa5f Lib/logging/__init__.py
--- a/Lib/logging/__init__.py	Sun Jan 03 18:00:31 2016 -0800
+++ b/Lib/logging/__init__.py	Sat Jan 09 16:00:28 2016 +0200
@@ -1376,13 +1376,13 @@
         return rv
 
     def makeRecord(self, name, level, fn, lno, msg, args, exc_info,
-                   func=None, extra=None, sinfo=None):
+                   func=None, extra=None, sinfo=None, **kwargs):
         """
         A factory method which can be overridden in subclasses to create
         specialized LogRecords.
         """
         rv = _logRecordFactory(name, level, fn, lno, msg, args, exc_info, func,
-                             sinfo)
+                             sinfo, **kwargs)
         if extra is not None:
             for key in extra:
                 if (key in ["message", "asctime"]) or (key in rv.__dict__):
@@ -1390,7 +1390,7 @@
                 rv.__dict__[key] = extra[key]
         return rv
 
-    def _log(self, level, msg, args, exc_info=None, extra=None, stack_info=False):
+    def _log(self, level, msg, args, exc_info=None, extra=None, stack_info=False, **kwargs):
         """
         Low-level logging routine which creates a LogRecord and then calls
         all the handlers of this logger to handle the record.
@@ -1412,7 +1412,7 @@
             elif not isinstance(exc_info, tuple):
                 exc_info = sys.exc_info()
         record = self.makeRecord(self.name, level, fn, lno, msg, args,
-                                 exc_info, func, extra, sinfo)
+                                 exc_info, func, extra, sinfo, **kwargs)
         self.handle(record)
 
     def handle(self, record):