opencv-python==4.1.1.26 error

[sm3533]

(base) C:\Windows\System32\PEDRA>pip install -r requirements_cpu.txt
Collecting absl-py==0.8.1
Using cached absl-py-0.8.1.tar.gz (103 kB)
Preparing metadata (setup.py) ... done
Collecting airsim==1.2.4
Using cached airsim-1.2.4-py3-none-any.whl (12 kB)
Collecting astor==0.8.0
Using cached astor-0.8.0-py2.py3-none-any.whl (27 kB)
Collecting bleach==1.5.0
Using cached bleach-1.5.0-py2.py3-none-any.whl (17 kB)
Collecting certifi==2018.8.24
Using cached certifi-2018.8.24-py2.py3-none-any.whl (147 kB)
Collecting cycler==0.10.0
Using cached cycler-0.10.0-py2.py3-none-any.whl (6.5 kB)
Collecting decorator==4.4.2
Using cached decorator-4.4.2-py2.py3-none-any.whl (9.2 kB)
Collecting dotmap==1.3.8
Using cached dotmap-1.3.8-py3-none-any.whl (10 kB)
Collecting enum34==1.1.6
Using cached enum34-1.1.6-py3-none-any.whl (12 kB)
Collecting gast==0.2.2
Using cached gast-0.2.2.tar.gz (10 kB)
Preparing metadata (setup.py) ... done
Collecting google-pasta==0.1.7
Using cached google_pasta-0.1.7-py3-none-any.whl (52 kB)
Collecting grpcio==1.24.1
Using cached grpcio-1.24.1.tar.gz (14.1 MB)
Preparing metadata (setup.py) ... done
Collecting h5py==2.10.0
Using cached h5py-2.10.0.tar.gz (301 kB)
Preparing metadata (setup.py) ... done
Collecting html5lib==0.9999999
Using cached html5lib-0.9999999.tar.gz (889 kB)
Preparing metadata (setup.py) ... done
Collecting imageio==2.8.0
Using cached imageio-2.8.0-py3-none-any.whl (3.3 MB)
Collecting Keras-Applications==1.0.8
Using cached Keras_Applications-1.0.8-py3-none-any.whl (50 kB)
Collecting Keras-Preprocessing==1.1.0
Using cached Keras_Preprocessing-1.1.0-py2.py3-none-any.whl (41 kB)
Collecting kiwisolver==1.1.0
Using cached kiwisolver-1.1.0.tar.gz (30 kB)
Preparing metadata (setup.py) ... done
Collecting Markdown==3.1.1
Using cached Markdown-3.1.1-py2.py3-none-any.whl (87 kB)
Collecting matplotlib==3.0.3
Using cached matplotlib-3.0.3.tar.gz (36.6 MB)
Preparing metadata (setup.py) ... done
Collecting msgpack-python==0.5.6
Using cached msgpack-python-0.5.6.tar.gz (138 kB)
Preparing metadata (setup.py) ... done
Collecting msgpack-rpc-python==0.4.1
Using cached msgpack-rpc-python-0.4.1.tar.gz (7.7 kB)
Preparing metadata (setup.py) ... done
Collecting networkx==2.4
Using cached networkx-2.4-py3-none-any.whl (1.6 MB)
Collecting numpy==1.15.4
Using cached numpy-1.15.4.zip (4.5 MB)
Preparing metadata (setup.py) ... done
Collecting nvidia-ml-py3==7.352.0
Using cached nvidia-ml-py3-7.352.0.tar.gz (19 kB)
Preparing metadata (setup.py) ... done
ERROR: Could not find a version that satisfies the requirement opencv-python==4.1.1.26 (from versions: 3.4.0.14, 3.4.10.37, 3.4.11.39, 3.4.11.41, 3.4.11.43, 3.4.11.45, 3.4.13.47, 3.4.14.51, 3.4.14.53, 3.4.15.55, 3.4.16.57, 3.4.16.59, 3.4.17.61, 3.4.17.63, 3.4.18.65, 4.3.0.38, 4.4.0.40, 4.4.0.42, 4.4.0.44, 4.4.0.46, 4.5.1.48, 4.5.2.52, 4.5.2.54, 4.5.3.56, 4.5.4.58, 4.5.4.60, 4.5.5.62, 4.5.5.64, 4.6.0.66)
ERROR: No matching distribution found for opencv-python==4.1.1.26

Tried to find the 4.1.1.26 OpenCV python package in OpenCV lib but it said the source file was no more. Can you look into this, please?