# 1.3.2+1.20.1
> ### ⚠️ Read this before updating
>
> This release is a **major technical overhaul and is not backwards compatible.**
>
> - **Requires the matching Spell Engine release.** This version will not run on Spell Engine
> **0.9.x**, and mods built against 0.9.x will not work alongside it.
> - **Update the whole set together.** Spell Engine and every RPG Series mod must be on
> matching versions. Mixing in an older add-on will break at startup or misbehave in play.
> - **Spell books must be re-obtained.** Spell books from an older world no longer carry valid
> spell data. Re-craft them, or re-bind their spells at the Spell Binding Table.
>
> **Back up your world before updating.**
- Ported to Minecraft 1.20.1 (Fabric + Forge 47)
Developer information
Projects on Modrinth are automatically available through a Maven repository for use with JVM build tools such as Gradle.
maven { name = "Modrinth"; url = "https://api.modrinth.com/maven" }
