# OOD Upgrade 3.1 -\> 4.0

**URL:** <https://discourse.openondemand.org/t/ood-upgrade-3-1-4-0/4360>\
**Category:** Get Help\
**Tags:** question\
**Created:** [July 14, 2025, 3:29pm UTC](https://discourse.openondemand.org/t/ood-upgrade-3-1-4-0/4360 "2025-07-14T15:29:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![kenny.hanson](https://avatars.discourse-cdn.com/v4/letter/k/6de8d8/32.png) [@kenny.hanson](https://discourse.openondemand.org/u/kenny.hanson)\
**Post date:** [July 14, 2025, 3:29pm UTC](https://discourse.openondemand.org/t/ood-upgrade-3-1-4-0/4360/1 "2025-07-14T15:29:36Z")

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Hey guys,  
I’m working on upgrading our 3.1 OOD to 4.0. I’m not finding any specific instructions in the documentation regarding upgrades in place. I’m hoping this is possible?

Kenny

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**Author:** ![jeff.ohrstrom](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/jeff.ohrstrom/32/136_2.png) [@jeff.ohrstrom](https://discourse.openondemand.org/u/jeff.ohrstrom)\
**Post date:** [July 14, 2025, 3:36pm UTC](https://discourse.openondemand.org/t/ood-upgrade-3-1-4-0/4360/2 "2025-07-14T15:36:30Z")

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Yes it’s possible, though there are some breaking changes. You can checkout the release notes for the same.

> **[v4.0 Release Notes — Open OnDemand 4.0.0 documentation](https://osc.github.io/ood-documentation/latest/release-notes/v4.0-release-notes.html#breaking-changes)**

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**Author:** ![kenny.hanson](https://avatars.discourse-cdn.com/v4/letter/k/6de8d8/32.png) [@kenny.hanson](https://discourse.openondemand.org/u/kenny.hanson)\
**Post date:** [July 14, 2025, 6:35pm UTC](https://discourse.openondemand.org/t/ood-upgrade-3-1-4-0/4360/3 "2025-07-14T18:35:01Z")

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Deleted the old 3.x repo file, installed new one, dnf update was smooth sailing. The release notes were good, didn’t think to look there.

Thanks Jeff!

Kenny

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**Author:** ![system](https://us1.discourse-cdn.com/flex015/uploads/osc/original/2X/b/bae70bd0ed39a3ae769c2108155f4cb3e9da8385.png) [@system](https://discourse.openondemand.org/u/system)\
**Post date:** [January 10, 2026, 6:36pm UTC](https://discourse.openondemand.org/t/ood-upgrade-3-1-4-0/4360/4 "2026-01-10T18:36:00Z")

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Closed on January 10, 2026, 6:36pm UTC

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