---
layout: developer-doc
title: Upgrading GraalVM
category: infrastructure
tags: [infrastructure, build, graalvm, graal, jvm]
order: 5
---

# Upgrading GraalVM

After upgrading the project to a newer version of GraalVM, all developers must
take the following actions to be able to continue development after the upgrade:

1. Download the new JVM version and set it as the default for the project. If
   you use IntelliJ, you will also need to update the JVM used for the project
   in the project settings.
2. Re-run `sbt bootstrap` to get the updated Truffle JAR (if there are issues
   updating, removing `engine/runtime/build-cache` directory may help).
3. Do a full clean (it may not _always_ be required, but not doing it often
   leads to problems so it is much safer to do it) by running `enso/clean`.

## Upgrading the Build

If you are upgrading the _build_ to a new GraalVM version, you additionally need
to perform the following tasks:

- Change the expected GraalVM version in the [`build.sbt`](../../build.sbt)
  configuration. This is both a version number and (if it is changed), the
  associated version of Java.
- Change the base image in the [`Dockerfile`](../../tools/ci/docker/Dockerfile)
  to contain the correct GraalVM version.
- Just to be sure, search for the version regex in all the files in the repo.
- Ensure that all deprecations have been handled.