normalize() got an unexpected keyword argument 'is_dst'

Here is the traceback, that is raised on celery startup:

    Traceback (most recent call last):
       File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/celery/worker/__init__.py", line 347, in start
        component.start()
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/celery/worker/consumer.py", line 391, in start
        self.consume_messages()
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/celery/worker/consumer.py", line 475, in consume_messages
        readers[fileno](fileno, event)
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/kombu/connection.py", line 201, in drain_nowait
        self.drain_events(timeout=0)
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/kombu/connection.py", line 197, in drain_events
        return self.transport.drain_events(self.connection, **kwargs)
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/kombu/transport/amqplib.py", line 330, in drain_events
        return connection.drain_events(**kwargs)
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/kombu/transport/amqplib.py", line 182, in drain_events
        return amqp_method(channel, args, content)
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/amqplib/client_0_8/channel.py", line 2060, in _basic_deliver
        func(msg)
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/kombu/messaging.py", line 486, in _receive_callback
        self.receive(decoded, message)
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/kombu/messaging.py", line 458, in receive
        [callback(body, message) for callback in callbacks]
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/celery/worker/consumer.py", line 433, in on_task_received
        strategies[name](message, body, message.ack_log_error)
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/celery/worker/strategy.py", line 25, in task_message_handler
        delivery_info=message.delivery_info))
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/celery/worker/job.py", line 133, in __init__
        self.eta = maybe_make_aware(self.eta, self.tzlocal)
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/celery/utils/timeutils.py", line 319, in maybe_make_aware
        timezone.utc if tz is None else timezone.tz_or_local(tz))
      File "/home/webspm/webspm/env/local/lib/python2.7/site-packages/celery/utils/timeutils.py", line 304, in localize
        return _normalize(dt, is_dst=None)
    TypeError: normalize() got an unexpected keyword argument 'is_dst'

Version of pytz is 2012h, celery 3.0.12 (3.0.11 works well):

    pytz/tzinfo.py:111:    def normalize(self, dt, is_dst=False):
    pytz/tzinfo.py:189:    def normalize(self, dt):

celery/utils/timeutils.py

@@ -302,6 +302,8 @@ def localize(dt, tz):
     else:
         try:
             return _normalize(dt, is_dst=None)
+        except TypeError:
+            return _normalize(dt)
         except AmbiguousTimeError:
             return min(_normalize(dt, is_dst=True),
                        _normalize(dt, is_dst=False))