# Upgrade JDK 8 to 11 on ES5.1

**URL:** <https://discuss.elastic.co/t/upgrade-jdk-8-to-11-on-es5-1/159963>\
**Category:** Elasticsearch\
**Created:** [December 7, 2018, 4:23pm UTC](https://discuss.elastic.co/t/upgrade-jdk-8-to-11-on-es5-1/159963 "2018-12-07T16:23:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ttdata](https://avatars.discourse-cdn.com/v4/letter/t/a183cd/32.png) [@ttdata](https://discuss.elastic.co/u/ttdata)\
**Post date:** [December 7, 2018, 4:23pm UTC](https://discuss.elastic.co/t/upgrade-jdk-8-to-11-on-es5-1/159963/1 "2018-12-07T16:23:58Z")

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Hey guys !

I have an ES cluster in 6.5.1 with JDK 8 and i'd like to move to JDK11.  
Any recommandations ? Can i just upgrade JDK8 to JDK11 and restart one by one my ES node ?

Regards,

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 4, 2019, 4:24pm UTC](https://discuss.elastic.co/t/upgrade-jdk-8-to-11-on-es5-1/159963/2 "2019-01-04T16:24:49Z")

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