Could not find a version that satisfies the requirement sqlalchemy_mixins==1.1

[synthet1c-info]

sudo pip install git+https://github.com/owtf/owtf#egg=owtf

-- snip --
Collecting SQLAlchemy==1.1.13
Using cached SQLAlchemy-1.1.13.tar.gz (5.2 MB)
ERROR: Could not find a version that satisfies the requirement sqlalchemy_mixins==1.1 (from owtf) (from versions: 0.1.3, 0.1.4, 0.1.6, 0.1.7, 0.2, 0.2.1, 0.2.2, 0.2.3, 1.0, 1.0.1, 1.2.1)
ERROR: No matching distribution found for sqlalchemy_mixins==1.1 (from owtf)