**Urgent** Arbitrum Mainnet/Sepolia/Nova - Upgrade nitro to v3.5.5

Scheduled Maintenance Report for QuickNode

Completed

The scheduled maintenance has been completed.
Posted Apr 17, 2025 - 02:00 UTC

In progress

Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted Apr 17, 2025 - 01:00 UTC

Update

We will be undergoing scheduled maintenance during this time.
Posted Apr 16, 2025 - 23:50 UTC

Scheduled

We will be upgrading our nitro nodes on Arbitrum Mainnet/Sepolia/Nova to v3.5.5 on 2025-04-17 at 01:00 UTC

This updates includes the following Highlighted Changes:
- Launch of Timeboost on Arbitrum One and Nova, scheduled for April 17th at 09:00 ET / 13:00 UTC.
- Fix bug with tracing: #3084
- Fix Pectra header handling

Please see detailed change log at https://github.com/OffchainLabs/nitro/releases/tag/v3.5.5
Posted Apr 16, 2025 - 22:41 UTC
This scheduled maintenance affected: Arbitrum Nova (Mainnet — JSON-RPC API, Mainnet — Websockets API) and Arbitrum (Mainnet Nitro — JSON-RPC API, Mainnet Nitro — Websockets API, Sepolia - JSON RPC, Sepolia - Websockets API).