Pipx installs virtualenv with python3.9, any way to force 3.7

Following the official installation guide for virtualenv pipx install virtualenv i get

installed package virtualenv 20.4.2, Python 3.9.0
  These apps are now globally available
    - virtualenv
done! ✨ 🌟 ✨

And following that when I create a new virtualenv with virtualenv -p python3 venv, this includes python3.9 instead of python3.7 which the python 3 version I get when running which python3.

Is there any way I can instruct virtualenv to use the python3 version that is enabled in my computer?

If your 3.7 is accessible, let’s say which python3.7 returns a valid path, you can use that path instead, like so:

virtualenv -p $(which python3.7) new_env