# Upgrades * Upgrades using Helm upgrade feature via Rancher * Complexity of upgrades depends on the level of changes * In general, the persistence storage like the database is preserved during upgrades * Any Odoo database incompatible changes have to be dealt at Odoo level - Odoo provides are feature to upgrade database via its UI * For non-Odoo database changes, suitable migration scripts must be provided. * An upgrade must be thoroughly tested in staging before pushing in production --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.openg2p.org/1.3/deployment/upgrades.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.