# Rolling Upgrades

> The ability to upgrade instances one at a time while old and new versions interoperate.

Record: `lexicon:rolling-upgrades`
Kind: capability
Layer: [Contracts Core](https://banes-lab.com/records/layer/contracts-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-rolling-upgrades

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Reliable Integration](https://banes-lab.com/records/lexicon/reliable-integration.md) and before [Schema Evolution](https://banes-lab.com/records/lexicon/schema-evolution.md).

## Category

- [Contracts / Interfaces / Compatibility](https://banes-lab.com/records/lexicon-category/contracts-interfaces-compatibility.md)

## Enabled by

- [Forward Compatibility](https://banes-lab.com/records/architecture/forward-compatibility.md)

## Linked from

- [Contracts / Interfaces / Compatibility](https://banes-lab.com/ontology/principles/architecture-category-contracts-interfaces-compatibility.md)