ERROR: No matching distribution found for tensorflow-gpu==1.9.0

[AmetistDrake]

Collecting joblib>=0.17.0
  Using cached joblib-1.1.0-py2.py3-none-any.whl (306 kB)
ERROR: Could not find a version that satisfies the requirement tensorflow-gpu<=1.14.0,>=1.9.0 (from rl-coach) (from versions: 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.4.0, 2.4.1, 2.4.2, 2.4.3, 2.4.4, 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.7.0rc0, 2.7.0rc1, 2.7.0, 2.7.1, 2.8.0rc0, 2.8.0rc1, 2.8.0)
ERROR: No matching distribution found for tensorflow-gpu<=1.14.0,>=1.9.0

Seems like the joblib library is deprecated, and using old version of tensorflow.