-r requirements.txt
django-test-without-migrations==0.6
ipdb==0.11
mixer==6.0.1

-r requirements.txt
django-test-without-migrations==0.6
ipdb==0.11
mixer==6.1.3

Update mixer from 6.0.1 to 6.1.3
Update mixer from 6.0.1 to 6.1.3