# Source: https://camel.apache.org/manual/migration-and-upgrade.md

# Apache Camel Migration and Upgrade Guides

We do frequent releases, a release almost every month, and even though we strive to maintain backward compatibility, we may on occasion introduce a breaking change in the interest of the long-term evolution of the project.

Listed here are the notes on how to migrate between major versions, and what to watch out when upgrading from minor versions.

-   [Camel 2.x to 3.0 migration guide](camel-3-migration-guide.md)
    
-   [Upgrade guide for 3.x releases](camel-3x-upgrade-guide.md)
    
-   [Camel 3.x to 4.0 migration guide](camel-4-migration-guide.md)
    
-   [Upgrade guide for 4.x releases](camel-4x-upgrade-guide.md)