Can't upgrade pip
I haven´t been able to install several plugins. Apparently, I need to upgrade my pip.
"You are using pip version 9.0.1, however version 19.2.3 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command."
However, i use the commands that appear here: https://osdoc.cogsci.nl/3.2/manual/environment/ and none of them work. I'm working on a windows computer and my opensesame version is 3.2.8.
What can I do?