What version of Python does your anaconda have? I am on 3.7.7 and (in the past) when I used the command you posted, the farthest I could get to was PyTorch 1.3.1 and torchvision 0.4.2. I manually upgraded the modules using the command I posted. However, in the interest of your conda environment stability, I’d just create a new environment and install libraries as needed.