Upgrading libraries has moved 📦

Our dependency-version inventory now lives in the Project Sidewalk repository, next to the build files it tracks, so it stays accurate and is the single source of truth for library versions:

➡️ docs/upgrading-libraries.md

It lists every Scala/sbt/Play and JavaScript dependency, the version we're on, and how to check for and apply updates to each.

Please update your bookmarks. This page is kept only as a redirect. See issue #4252 for why we moved core developer docs into the repo.