[Standard] Arbitrum, Nova, Robinhood, Gravity - Mainnet and Testnet - Upgrade to Nitro v3.11.4

Scheduled for Sep 17, 11:00 - 17:00 UTC

Scheduled

We are upgrading our Arbitrum stack infrastructure across Arbitrum Mainnet, Arbitrum Nova, Arbitrum One, Robinhood Chain, and Gravity Alpham to Nitro v3.11.4. This is a node software release with no chain consensus changes.

During the maintenance window, brief interruptions to RPC availability may occur.

Posted Sep 10, 2026 - 19:14 UTC

This scheduled maintenance affects: Arbitrum Nova (Mainnet — JSON-RPC API), Arbitrum (Mainnet Nitro — JSON-RPC API, Sepolia - JSON RPC), Gravity (Alpham — JSON-RPC API), and RobinHood (Robinhood Testnet - JSON RPC API, RobinHood - Mainnet - JSON RPC).