can not find 0.69 version

[SMY19999]

when i run pip install chumpy==0.69, there turns out
WARNING: Discarding https://files.pythonhosted.org/packages/87/81/d7a94ad0ff556b9dd1bf27b84c0b255d9ba22ad5952f20088dafacd9292e/chumpy-0.69.tar.gz#sha256=801bfdd53ffcdf386620b29129dc8d7f75f397010f31554c17a30d5a7b58c4df (from https://pypi.org/simple/chumpy/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output. ERROR: Could not find a version that satisfies the requirement chumpy==0.69 (from versions: 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.60, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67.1, 0.67.2, 0.67.3, 0.67.4, 0.67.5, 0.67.6, 0.67.7, 0.68, 0.69, 0.70) ERROR: No matching distribution found for chumpy==0.69