[Standard] [Mainnet] Mantle Arsia Upgrade to v1.5.4 in prep for Arsia Upgrade

Scheduled for Apr 15, 14:00 - 22:00 UTC

Scheduled

We are updating our Mantle Mainnet infrastructure to v1.5.4 as part of the Arsia network upgrade, scheduled to activate at L2 block timestamp 1776841200 (April 22, 2026, 07:00 UTC). During the upgrade window, brief interruptions to RPC availability are expected — the sequencer will pause for approximately 30 seconds at activation.

RPC Changes:

Transaction fees — modified The Arsia upgrade introduces a new fee model for Mantle Mainnet. Gas fee estimates and transaction costs may differ from pre-upgrade behavior. Clients that rely on fee estimation should account for the updated fee mechanism post-activation.

https://github.com/mantlenetworkio/networks/releases/tag/v1.5.4 https://docs.mantle.xyz/network/for-node-operators/network-updates/changelogs/mantle-v2-v1.5.4-arsia-upgrade

Posted Apr 08, 2026 - 15:45 UTC

This scheduled maintenance affects: Mantle (Mainnet — JSON-RPC API, Mainnet — Websockets API, Mainnet — Streams, Mainnet — Webhooks).