-r base.txt
gunicorn==19.7.1
whitenoise==3.3.0
psycopg2==2.7.3

-r base.txt
gunicorn==19.7.1
whitenoise==3.3.0
psycopg2==2.7.3.1

Update psycopg2 from 2.7.3 to 2.7.3.1
Update psycopg2 from 2.7.3 to 2.7.3.1