---
layout: "contents"
title: Gym v0.23.0
---

# v0.23.0 Release Notes

This release contains many bug fixes and a few small changes.

## Breaking changes

* Standardized render metadata variables ahead of render breaking change [@trigaten](https://github.com/trigaten)
* Removed deprecated monitor wrapper and associated dead code [@gianlucadecola](https://github.com/gianlucadecola)
* Unused striker and thrower MuJoCo envs moved to https://github.com/RushivArora/Gym-Mujoco-Archive [@RushivArora](https://github.com/RushivArora)

* Many minor bug fixes ([@vwxyzjn](https://github.com/vwxyzjn), [@RedTachyon](https://github.com/RedTachyon), [@rusu24edward](https://github.com/rusu24edward), [@Markus28](https://github.com/Markus28), [@dsctt](https://github.com/dsctt), [@andrewtanJS](https://github.com/andrewtanJS), [@tristandeleu](https://github.com/tristandeleu), [@duburcqa](https://github.com/duburcqa))

**Full Changelog**: https://github.com/openai/gym/compare/0.22.0...0.23.0

**Github Release**: https://github.com/openai/gym/releases/tag/0.23.0