Update to 1.20.1. This build is an alpha, meaning things might be broken and APIs may change. Don't add to a modpack unless you plan to continue to support the modpack for the next several months.
If you are an addon author, know that the API is not yet stable so you may have to make changes when the next release is made. Otherwise, if you wait for a Beta release the API will be stable. See GitHub for what to expect to change in future 1.20 builds.
For a full changelog, see https://github.com/SlimeKnights/TinkersConstruct/releases/tag/v3.9.0.6
Optional dependencies
Just Enough Items (JEI)
Any compatible version
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" }