# MainNet and TestNet Update: Go-Algorand 5.0.2

**URL:** <https://forum.algorand.co/t/mainnet-and-testnet-update-go-algorand-5-0-2/15468>\
**Category:** Announcements\
**Tags:** testnet, mainnet\
**Created:** [September 15, 2026, 2:58pm UTC](https://forum.algorand.co/t/mainnet-and-testnet-update-go-algorand-5-0-2/15468 "2026-09-15T14:58:09Z")\
**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:** [September 15, 2026, 2:58pm UTC](https://forum.algorand.co/t/mainnet-and-testnet-update-go-algorand-5-0-2/15468/1 "2026-09-15T14:58:09Z")

</div>

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

# Overview

This release improves safety and durability of node operation.

# What’s New

Strengthen handling around agreement verifications to improve stability.

# Changelog

## Enhancements

- agreement: discard stale cert bundles per spec bundle relay rule
- agreement: add bound check on step
- agreement: isolate bundle verification from untrusted periods

## Protocol Upgrade

This release does not contain a protocol upgrade.

## Additional Resources

- [Algorand Forum](https://forum.algorand.co)
- [Developer Portal](https://dev.algorand.co)