-r requirements.txt
django==2.2.5
bumpversion==0.5.3
wheel==0.33.6
django-environ==0.4.5
radon==3.0.3
djangorestframework==3.10.2
pytz==2019.2


-r requirements.txt
django==2.2.5
bumpversion==0.5.3
wheel==0.33.6
django-environ==0.4.5
radon==3.0.3
djangorestframework==3.10.2
pytz==2019.3


Update pytz from 2019.2 to 2019.3
Update pytz from 2019.2 to 2019.3