ERROR: Could not find a version that satisfies the requirement futures==3.2.0

[Chertoganov]

How to solve this error ?

Using cached https://files.pythonhosted.org/packages/69/cb/f5be453359271714c01b9bd06126eaf2e368f1fddfff30818754b5ac2328/funcsigs-1.0.2-py2.py3-none-any.whl
Collecting futures==3.2.0 (from -r requirements.txt (line 8))
ERROR: Could not find a version that satisfies the requirement futures==3.2.0 (from -r requirements.txt (line 8)) (from versions: 0.2.python3, 0.1, 0.2, 1.0, 2.0, 2.1, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5, 2.1.6, 2.2.0, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.1.0, 3.1.1)
ERROR: No matching distribution found for futures==3.2.0 (from -r requirements.txt (line 8))

[maryamag85]

same issue