This project is discontinued as of Fabric API 0.39.0+ for 1.16.5 and 1.17.1. Please use the EntitySleepEvents introduced in that Fabric API version instead.

Somnus is a lightweight library that adds a few events for sleeping in Minecraft to allow mod developers easy and compatible ways of implementing their sleep mechanics on Fabric.



  • Determining the time of day for the world when players wake up
  • Preventing or hooking into sleep attempts
  • Determining valid times of day for sleeping
  • Hooking into when players wake up
  • Changing vertical offsets for sleeping players

Adding to Your Project:

Please refer to the GitHub README file.


Please report all bugs, issues, and feature requests to the issue tracker.

For non-technical support and questions, join the developer's Discord.


All source code and assets are licensed under LGPL 3.0.


Donations to the developer can be sent through Ko-fi.