pytz: update to version 2018.3
django-statici18n: update to 1.6.1
openpyxl: update to 2.5.0b1
django-constance: update to 2.0.0
django-restframework: update to 3.7.1
python-urllib3: update to 1.22
django-compressor: update to 2.2
django-picklefield: update to 1.0.0