[Urgent] Scheduled: Sei Atlantic Testnet - Upgrade Sei to v6.4.0

Scheduled Maintenance Report for Quicknode

Completed

Maintenance has been completed.

Posted Apr 06, 2026 - 23:53 UTC

Update

Scheduled maintenance for Sei Atlantic (v6.4.0 upgrade) is currently in progress. The on-chain upgrade is governed by a target block height (239,866,529), and block times are currently slower than initially estimated. The upgrade is now expected to complete around 08:18 UTC on April 7, 2026.
All systems are operational and ready. We will provide updates as necessary

Posted Apr 06, 2026 - 12:51 UTC

In progress

Scheduled maintenance is currently in progress. We will provide updates as necessary.

Posted Apr 06, 2026 - 11:00 UTC

Scheduled

Urgent maintenance will be performed to upgrade the Sei client during the scheduled maintenance window.

**Client Updates:**
• Sei: Upgrading to v6.4.0

**Upgrade Details:**
• Chain will halt at block 239866529
• Scheduled for approximately 13:00 UTC on April 6th, 2026

Posted Apr 06, 2026 - 07:21 UTC

This scheduled maintenance affected: SEI (Pacific-1 Mainnet — EVM JSON-RPC API, Pacific-1 Mainnet — Tendermint JSON-RPC/REST API, Pacific-1 Mainnet — Cosmos REST API, Pacific-1 Mainnet — Websockets API, Pacific-1 Mainnet — Streams, Pacific-1 Mainnet — Webhooks, Atlantic-2 Testnet — EVM JSON-RPC API, Atlantic-2 Testnet — Tendermint JSON-RPC/REST API, Atlantic-2 Testnet — Cosmos REST API, Atlantic-2 Testnet — Websockets API, Atlantic-2 Testnet — Streams, Atlantic-2 Testnet — Webhooks).