# How to set extension for a liquibase installed on CentOS? **URL:** \ **Category:** General Discussion\ **Created:** [June 13, 2018, 1:14pm UTC](https://forum.liquibase.org/t/how-to-set-extension-for-a-liquibase-installed-on-centos/3634 "2018-06-13T13:14:00Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![DmitryYurin](https://avatars.discourse-cdn.com/v4/letter/d/9fc29f/32.png) [@DmitryYurin](https://forum.liquibase.org/u/DmitryYurin)\ **Post date:** [June 13, 2018, 1:14pm UTC](https://forum.liquibase.org/t/how-to-set-extension-for-a-liquibase-installed-on-centos/3634/1 "2018-06-13T13:14:00Z")
Hi All, I have liquibase installed on CentOS, but I have got very old scripts created for version 1.9, so, they need modifyColumn tag to run. I found that there is an extension for liquibase version 3.1 and elder which can add this functionality. [https://github.com/liquibase/liquibase-modify-column/wiki](https://github.com/liquibase/liquibase-modify-column/wiki) But I cannot figure out how to install this extension to my liquibase. On my CetOS it is intalled as a jar file, so I cant put the extension jar to it. When I put this jar as a set\_classpath value it does not work. Could you help me with this problem? UPD:  ---
**Author:** ![un20359507453740051r](https://avatars.discourse-cdn.com/v4/letter/u/a587f6/32.png) [@un20359507453740051r](https://forum.liquibase.org/u/un20359507453740051r)\ **Post date:** [June 13, 2018, 1:14pm UTC](https://forum.liquibase.org/t/how-to-set-extension-for-a-liquibase-installed-on-centos/3634/2 "2018-06-13T13:14:00Z")
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**Author:** ![un20359507453740051r](https://avatars.discourse-cdn.com/v4/letter/u/a587f6/32.png) [@un20359507453740051r](https://forum.liquibase.org/u/un20359507453740051r)\ **Post date:** [June 13, 2018, 1:14pm UTC](https://forum.liquibase.org/t/how-to-set-extension-for-a-liquibase-installed-on-centos/3634/3 "2018-06-13T13:14:00Z")
Yes, upgrade has solved the problem.