# Ethereum Muir Glacier Upgrade Announcement

DevFeed: [Ethereum Muir Glacier Upgrade Announcement](<https://devfeed.tech/articles/ethereum-muir-glacier-upgrade-announcement-16879.md>)

Original publisher: [Read original article](<https://blog.ethereum.org/en/2019/12/23/ethereum-muir-glacier-upgrade-announcement>)

Author: Hudson Jameson

Published: 2019-12-23T00:00:00Z

Content type: release

Language: en

Sources: [Ethereum Foundation Blog](<https://devfeed.tech/sources/ethereum-foundation-blog.md>)

Topics: [Ethereum](<https://devfeed.tech/topics/ethereum.md>), [Network](<https://devfeed.tech/topics/network.md>)

Tags: [announcement](<https://devfeed.tech/tags/announcement.md>), [developers](<https://devfeed.tech/tags/developers.md>), [ethereum](<https://devfeed.tech/tags/ethereum.md>), [network](<https://devfeed.tech/tags/network.md>), [protocol-announcements](<https://devfeed.tech/tags/protocol-announcements.md>), [scheduled](<https://devfeed.tech/tags/scheduled.md>), [upgrade](<https://devfeed.tech/tags/upgrade.md>)

## AI overview

The Ethereum network announced the scheduled Muir Glacier upgrade, expected at block 9,200,000 around January 1, 2020, with timing subject to variable block times. Node operators and miners were asked to upgrade their Ethereum clients, while users of exchanges and wallet services generally did not need to take action unless instructed.

## Source excerpt

The Ethereum network will be undergoing a scheduled upgrade at block number 9,200,000, which is predicted to occur on Wednesday, January 1, 2020. The exact date is subject to change due to variable block times and timezones....