!pip install torch==1.8.1+cu111 torchvision==0.9.1+cu111 torchaudio===0.8.1 -f https://download.pytorch.org/whl/torch_stable.html
Based on this doc the command looks right. However, you didn’t explain any issue or what exactly is failing. In case pip cannot find the right wheel, make sure you are using a supported Python version.