# Using Elasticsearch client 6.4 with a 5.6 server?

**URL:** <https://discuss.elastic.co/t/using-elasticsearch-client-6-4-with-a-5-6-server/159034>\
**Category:** Elasticsearch\
**Created:** [December 2, 2018, 10:09am UTC](https://discuss.elastic.co/t/using-elasticsearch-client-6-4-with-a-5-6-server/159034 "2018-12-02T10:09:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![salamander](https://avatars.discourse-cdn.com/v4/letter/s/d07c76/32.png) [@salamander](https://discuss.elastic.co/u/salamander)\
**Post date:** [December 2, 2018, 10:09am UTC](https://discuss.elastic.co/t/using-elasticsearch-client-6-4-with-a-5-6-server/159034/1 "2018-12-02T10:09:06Z")

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Hey,  
I have a little question regarding the use of a new client (6.4) with an older server (5.6).  
Due to some technical limitations, I'm not able to upgrade the server right now,  
However - I am able to upgrade the client, the question is whether or not there's going to be an issue with that?

Thanks in advance!

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**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [December 2, 2018, 11:32am UTC](https://discuss.elastic.co/t/using-elasticsearch-client-6-4-with-a-5-6-server/159034/2 "2018-12-02T11:32:38Z")

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It might not work correctly.

Which client are you talking about BTW?

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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:** [December 30, 2018, 11:32am UTC](https://discuss.elastic.co/t/using-elasticsearch-client-6-4-with-a-5-6-server/159034/3 "2018-12-30T11:32:46Z")

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Closed on December 30, 2018, 11:32am UTC

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