Where is Rancher Stack Latest upgrade date

Hi Everyone,

I am trying to find the the latest upgrade date for the rancher stack via API. But I could not find any upgrade date in any of the documentation.

I saw we have the “created” and “createdTS” fields but they do not update when the stack upgraded to the new version.

Anyone has any advice on how I can get the Rancher Stack’s latest upgrade date via API?

Thank you very much.