# Arrow Glacier Upgrade Announcement

DevFeed: [Arrow Glacier Upgrade Announcement](<https://devfeed.tech/articles/arrow-glacier-upgrade-announcement-16988.md>)

Original publisher: [Read original article](<https://blog.ethereum.org/en/2021/11/10/arrow-glacier-announcement>)

Author: Tim Beiko

Published: 2021-11-10T00:00:00Z

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>), [Software](<https://devfeed.tech/topics/software.md>)

Tags: [announcement](<https://devfeed.tech/tags/announcement.md>), [deprecated](<https://devfeed.tech/tags/deprecated.md>), [ethereum](<https://devfeed.tech/tags/ethereum.md>), [network](<https://devfeed.tech/tags/network.md>), [node](<https://devfeed.tech/tags/node.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

Ethereum announced the Arrow Glacier network upgrade, scheduled for block 13,773,000 and expected on December 8, 2021, with timing subject to change. The upgrade delays the Ice Age/Difficulty Bomb until June 2022 and requires node operators to update compatible Ethereum client software.

## Source excerpt

The Ethereum network will be undergoing a scheduled upgrade at block number 13,773,000, which is predicted to occur on Wednesday, December 8, 2021. The exact date is subject to change due to variable block times and timezones. Please upgrade your node before Sunday, December 5, 2021 to account for the...