JSON decoder timestamp error

[durack1]

It seems that a json package update has triggered the following warning, when vcs imports this package it seems to require a global attribute or environment variable set that isn't currently set

In [1]: import vcs
/export/durack1/anaconda2/envs/uvcdat280/lib/python2.7/json/encoder.py:207: DeprecationWarning: Interpreting naive datetime as local 2017-04-06 12:57:51.759099. Please add timezone info to timestamps.
  chunks = self.iterencode(o, _one_shot=True)
/export/durack1/anaconda2/envs/uvcdat280/lib/python2.7/json/encoder.py:207: DeprecationWarning: Interpreting naive datetime as local 2017-04-06 12:57:53.901765. Please add timezone info to timestamps.
  chunks = self.iterencode(o, _one_shot=True)
/export/durack1/anaconda2/envs/uvcdat280/lib/python2.7/json/encoder.py:207: DeprecationWarning: Interpreting naive datetime as local 2017-04-06 12:57:53.912374. Please add timezone info to timestamps.
  chunks = self.iterencode(o, _one_shot=True)