-r requirements.txt
django==2.1.5
bumpversion==0.5.3
wheel==0.32.3
django-environ==0.4.5
radon==3.0.0
pytz==2018.7
djangorestframework==3.9.1

-r requirements.txt
django==2.1.7
bumpversion==0.5.3
wheel==0.32.3
django-environ==0.4.5
radon==3.0.0
pytz==2018.7
djangorestframework==3.9.1

Update django from 2.1.5 to 2.1.7
Update django from 2.1.5 to 2.1.7