# StepUp Fabric 1.4.6+mc26.3
- Ported to Minecraft 26.3 / Java 25.
- Migrated keyboard mappings and mouse handling to Minecraft's SDL input constants.
- Preserved rebindable J/K actions, mode cycling, per-server settings, and sneaking behavior.
- Removed fixed default-key suffixes from translated action names.
## Requirements
- Minecraft Java Edition 26.3 and Java 25.
- Fabric Loader 0.19.5 or newer; Fabric API for Minecraft 26.3 is required.
## Prism Launcher 11.1.0 on Windows
If startup crashes with a native error, add `-XX:StackShadowPages=32` in the instance's Java arguments. Make sure it appears in the launch log. See [Prism issue #6073](https://github.com/PrismLauncher/PrismLauncher/issues/6073).
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" }
