# Upgrade 4.2.1.4 to 4.2.1.15 in Centos 8.4?

**URL:** <https://community.openiam.com/t/upgrade-4-2-1-4-to-4-2-1-15-in-centos-8-4/197>\
**Category:** Installation\
**Created:** [September 25, 2025, 1:50pm UTC](https://community.openiam.com/t/upgrade-4-2-1-4-to-4-2-1-15-in-centos-8-4/197 "2025-09-25T13:50:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jaandradeq](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@jaandradeq](https://community.openiam.com/u/jaandradeq)\
**Post date:** [September 25, 2025, 1:50pm UTC](https://community.openiam.com/t/upgrade-4-2-1-4-to-4-2-1-15-in-centos-8-4/197/1 "2025-09-25T13:50:39Z")

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Hello everyone, could an upgrade be performed from version 4.2.1.4 to 4.2.1.15 on a machine running CentOS 8.4 in a production environment with three cluster nodes and an RPM installation be performed?  
Or is a migration necessary because the OS needs to be changed to Linux 9 versions?

> **[Upgrading from versions 4.2.1.x to version 4.2.1.15 in RPM](https://docs.openiam.com/docs-4.2.1.15/installation/1-rpm-installation/6-upgrading/5-upgradingto-42115/)**
>
> This page describes how to upgrade OpenIAM previous versions 4.2.1.x to version 4.2.1.15 in RPM