No matching distribution found for black

During installation, running:

pip install -e .'[test,lint,format,type,docs,pkg]' --user

The following error is produced:

Collecting black (from librehosters-cli==0.1.dev1+ge3d2adb)
   Could not find a version that satisfies the requirement black (from librehosters-cli==0.1.dev1+ge3d2adb) (from versions: )
No matching distribution found for black (from librehosters-cli==0.1.dev1+ge3d2adb)

... leaving the installation undone.

pip --version
pip 9.0.1 from /usr/lib64/python3.5/site-packages (python 3.5)