# How to update Python version from 3.67 to 3.8
**URL:** https://discourse.slicer.org/t/how-to-update-python-version-from-3-67-to-3-8/16650
**Category:** Support
**Tags:** python
**Created:** [March 19, 2021, 6:25pm UTC](https://discourse.slicer.org/t/how-to-update-python-version-from-3-67-to-3-8/16650 "2021-03-19T18:25:30Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@full\_stack\_master](https://discourse.slicer.org/u/full_stack_master)
#### Post date: [March 19, 2021, 6:25pm UTC](https://discourse.slicer.org/t/how-to-update-python-version-from-3-67-to-3-8/16650/1 "2021-03-19T18:25:30Z")
I want to update My slicer’s Python version from 3.6.7 to 3.8 because I am going to use Torch package
As you know, this package is working on Python 3.8
Can you help me?
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### Author:  [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [March 19, 2021, 6:30pm UTC](https://discourse.slicer.org/t/how-to-update-python-version-from-3-67-to-3-8/16650/2 "2021-03-19T18:30:52Z")
To answer your question it’s not easy to change python versions. We update fairly frequently but it’s not always easy (perhaps these minor versions would be, I don’t know).
But if your goal is to use torch, I was able to pip\_install torch with recent Slicer versions and it worked great.
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### Author:  [@fbordignon](https://discourse.slicer.org/u/fbordignon)
#### Post date: [October 29, 2021, 2:45pm UTC](https://discourse.slicer.org/t/how-to-update-python-version-from-3-67-to-3-8/16650/3 "2021-10-29T14:45:25Z")
Hey @pieper, I am willing to give this a go (upgrade to 3.8). Do you remember the sort of problems I may face when doing so? There are a few libs that could benefit from the upgrade.
Thanks!
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [October 29, 2021, 3:53pm UTC](https://discourse.slicer.org/t/how-to-update-python-version-from-3-67-to-3-8/16650/4 "2021-10-29T15:53:03Z")
@jcfr recommended at least Python-3.9 and maybe Python-3.10.
You can try updating `python-source` in Slicer’s External\_python.cmake to 3.10 and report any errors you get and cannot fix by yourself to the [python-cmake-buildsystem project](https://github.com/python-cmake-buildsystem/python-cmake-buildsystem).
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### Author:  [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)
#### Post date: [October 29, 2021, 3:55pm UTC](https://discourse.slicer.org/t/how-to-update-python-version-from-3-67-to-3-8/16650/5 "2021-10-29T15:55:45Z")
Already started work on the python-cmake-buildsystem project is detailed in this Slicer issue. There is indeed changes needed on the python-cmake-buildsystem front to support the upgrade.
>
>
> This was initially discussed in https://github.com/Slicer/Slicer/issues/4859
>
> …The following PR would need to be finalized:
>
> \- \[\] python-cmake-buildsystem/python-cmake-buildsystem#264
> \- \[\] python-cmake-buildsystem/python-cmake-buildsystem#267
> \- \[\] When Slicer's Python is upgraded then post a comment to MONAILabel issue https://github.com/Project-MONAI/MONAILabel/pull/378 (so that they can remove Python-3.6 support from MONAILabel)