# Keep indices while updating ES from 2.4 to 6.X
**URL:** https://discuss.elastic.co/t/keep-indices-while-updating-es-from-2-4-to-6-x/140023
**Category:** Elasticsearch
**Created:** [July 14, 2018, 10:16am UTC](https://discuss.elastic.co/t/keep-indices-while-updating-es-from-2-4-to-6-x/140023 "2018-07-14T10:16:54Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Jensxy](https://discuss.elastic.co/u/Jensxy)
#### Post date: [July 14, 2018, 10:16am UTC](https://discuss.elastic.co/t/keep-indices-while-updating-es-from-2-4-to-6-x/140023/1 "2018-07-14T10:16:54Z")
I have created several indices with ES2.4 and now I want to update ES to ES6.X.
What steps do I have to take care off, when I want to reuse my indices?
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### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [July 14, 2018, 10:54am UTC](https://discuss.elastic.co/t/keep-indices-while-updating-es-from-2-4-to-6-x/140023/2 "2018-07-14T10:54:21Z")
Elasticsearch 2.7 does not exist, so I assume you mean 2.4? Have you looked at the [migration docs](https://www.elastic.co/guide/en/elasticsearch/reference/current/reindex-upgrade.html)?
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### Author:  [@Jensxy](https://discuss.elastic.co/u/Jensxy)
#### Post date: [July 14, 2018, 11:07am UTC](https://discuss.elastic.co/t/keep-indices-while-updating-es-from-2-4-to-6-x/140023/3 "2018-07-14T11:07:10Z")
Yes, you're right. I mean 2.4.
I will try it. Thank you very much!
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 11, 2018, 11:07am UTC](https://discuss.elastic.co/t/keep-indices-while-updating-es-from-2-4-to-6-x/140023/4 "2018-08-11T11:07:42Z")
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