# Using Cumulocity Frontend Version 10.5 with Backend version of 9.20

**URL:** <https://community.cumulocity.com/t/using-cumulocity-frontend-version-10-5-with-backend-version-of-9-20/172>\
**Category:** Forum\
**Tags:** cumulocity\
**Created:** [November 8, 2019, 5:32pm UTC](https://community.cumulocity.com/t/using-cumulocity-frontend-version-10-5-with-backend-version-of-9-20/172 "2019-11-08T17:32:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Balpreet\_Jaggi](https://avatars.discourse-cdn.com/v4/letter/b/a8b319/32.png) [@Balpreet\_Jaggi](https://community.cumulocity.com/u/Balpreet_Jaggi)\
**Post date:** [November 8, 2019, 5:32pm UTC](https://community.cumulocity.com/t/using-cumulocity-frontend-version-10-5-with-backend-version-of-9-20/172/1 "2019-11-08T17:32:51Z")

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Hi,

We are working on a project and decided to upgrade the Frontend version to 10.5 from 9.20 but keeping the backend version same to 9.20. Is it possible to work with this setup without facing any issues in frontend and backend development.

With Kind Regards,  
Balpreet

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**Author:** ![Michael\_Welsing](https://avatars.discourse-cdn.com/v4/letter/m/3e96dc/32.png) [@Michael\_Welsing](https://community.cumulocity.com/u/Michael_Welsing)\
**Post date:** [November 14, 2019, 3:03pm UTC](https://community.cumulocity.com/t/using-cumulocity-frontend-version-10-5-with-backend-version-of-9-20/172/2 "2019-11-14T15:03:12Z")

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Hi Balpreet,

sorry to say, but this setup is not supported.

best regards  
Michael

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**Author:** ![system](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/system/32/31990_2.png) [@system](https://community.cumulocity.com/u/system)\
**Post date:** [April 2, 2021, 3:43pm UTC](https://community.cumulocity.com/t/using-cumulocity-frontend-version-10-5-with-backend-version-of-9-20/172/3 "2021-04-02T15:43:46Z")

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