# API version v4

**URL:** <https://community.hubspot.com/t/api-version-v4/58390>\
**Category:** APIs & Integrations\
**Tags:** timeline-and-extensions-apis\
**Created:** [June 6, 2022, 7:35am UTC](https://community.hubspot.com/t/api-version-v4/58390 "2022-06-06T07:35:47Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MVisnovsky](https://avatars.discourse-cdn.com/v4/letter/m/7c8e57/32.png) [@MVisnovsky](https://community.hubspot.com/u/MVisnovsky)\
**Post date:** [June 6, 2022, 7:35am UTC](https://community.hubspot.com/t/api-version-v4/58390/1 "2022-06-06T07:35:47Z")

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Hello,

our company is currently looking into using association labels more to define relationships between contacts and companies in HubSpot. I checked with our DEV team and they confirmed, that currently we use API v1 for everything apart from one part of our integration, which uses v3.  
My question is, can we use Association labels with these versions of API or do we need tu upgrade to v4? What is the downside of using these versions and how crucial it is for us to upgrade to v4?  
Thank you in advance. If you have any questions, let me know.  
Best,  
Matej

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**Author:** ![ap3](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/ap3/32/5125_2.png) [@ap3](https://community.hubspot.com/u/ap3)\
**Post date:** [June 6, 2022, 8:17pm UTC](https://community.hubspot.com/t/api-version-v4/58390/2 "2022-06-06T20:17:13Z")

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I don’t believe there should be any issues, as long as all the endpoints you’re using are still stable/supported.

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**Author:** ![himanshurauthan](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/himanshurauthan/32/53076_2.png) [@himanshurauthan](https://community.hubspot.com/u/himanshurauthan)\
**Post date:** [June 7, 2022, 11:51am UTC](https://community.hubspot.com/t/api-version-v4/58390/3 "2022-06-07T11:51:30Z")

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Hello [@MVišňovský](https://community.hubspot.com/t5/user/viewprofilepage/user-id/396890),

You can use the Association labels with the same version of API that you are using right now. But it would be better if you could move to the latest API version i.e, v3 and v4, if you migrate the API from v1 to v3 or v4 then you need to check the syntax and the response.

You can easily upgrade to v3 and v4, you need to check the responses of v3 and update your code according to the updated responses.

I hope this helps!

Regards,