> For the complete documentation index, see [llms.txt](https://concordialang.gitbook.io/concordialang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://concordialang.gitbook.io/concordialang/upgrade.md).

# Upgrade

- [How to Upgrade](https://concordialang.gitbook.io/concordialang/upgrade/versioning.md)
- [Migration Guide](https://concordialang.gitbook.io/concordialang/upgrade/migration-guide.md)
- [Breaking Changes](https://concordialang.gitbook.io/concordialang/upgrade/breaking-changes.md)
- [What's Next](https://concordialang.gitbook.io/concordialang/upgrade/whats-next.md): Ideas and proposals