Mantle Schedules Mainnet Upgrade v.1.4.2 for January 14

Name: Mainnet Upgrade v.1.4.2
Start: 2026-01-14T07:00:00Z
End: 2026-01-15T07:00:00Z

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Mantle plans to deploy mainnet upgrade v1.4.2 on January 14 at 07:00 UTC. The release focuses on enabling full compatibility with the upcoming Ethereum Fusaka upgrade.

Node operators are required to update their software before the deadline. A short service interruption of around five minutes is expected during the restart, and downgrades will not be supported after the upgrade.

Event date: January 14, 2026 7:00 UTC

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