# MainNet and TestNet Update: Go-Algorand 3.18.1

**URL:** <https://forum.algorand.co/t/mainnet-and-testnet-update-go-algorand-3-18-1/10433>\
**Category:** Announcements\
**Tags:** testnet, mainnet, releases\
**Created:** [October 3, 2023, 4:34pm UTC](https://forum.algorand.co/t/mainnet-and-testnet-update-go-algorand-3-18-1/10433 "2023-10-03T16:34:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![devops-service](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.algorand.co/devops-service/32/2205_2.png) [@devops-service](https://forum.algorand.co/u/devops-service)\
**Post date:** [October 3, 2023, 4:34pm UTC](https://forum.algorand.co/t/mainnet-and-testnet-update-go-algorand-3-18-1/10433/1 "2023-10-03T16:34:55Z")

</div>

![GitHub Logo](https://us1.discourse-cdn.com/flex016/uploads/algorand/original/1X/fcd756bba61094f9e8774e43ec402e311aeea50e.jpeg)

Go-Algorand 3.18.1 has been released to MainNet and TestNet today, Tue October 3rd, 12:00PM EDT (16:00 UTC). **This release does not contain a consensus upgrade**

# Overview

Deserialization refactor.

# Changelog

## Bugfixes

- Msgp: update and rebuild messagepack files

## Protocol Upgrade

This release does not contain a protocol upgrade.

## Additional Resources

- [Algorand Forum](https://forum.algorand.co)
- [Developer Documentation](https://developer.algorand.org)