# Depletion calculations do not deplete

**URL:** <https://openmc.discourse.group/t/depletion-calculations-do-not-deplete/3873>\
**Category:** User Support\
**Created:** [January 29, 2024, 10:52am UTC](https://openmc.discourse.group/t/depletion-calculations-do-not-deplete/3873 "2024-01-29T10:52:34Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![paulromano](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/paulromano/32/486_2.png) [@paulromano](https://openmc.discourse.group/u/paulromano)\
**Post date:** [January 30, 2024, 10:09pm UTC](https://openmc.discourse.group/t/depletion-calculations-do-not-deplete/3873/6 "2024-01-30T22:09:03Z")

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One thing I’ll mention – there was recently a new version of SciPy released (1.12) and it caused a lot of our depletion tests to fail, and I have a sneaking suspicion that this may be the cause of the problems you all are seeing here. I haven’t had time to dig into the root cause yet and find a fix, but in the meantime I would suggest downgrading scipy to see if that helps (`pip install 'scipy==1.11.4'` or `conda install 'scipy=1.11.4'`).

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