Includes Arbitrum Nitro v3.9.8 and ArbOS 51 (BoLD) related updates. This is not a mandatory upgrade, but it is recommended for external node operators.
https://github.com/hpp-io/node/releases/tag/v3.9.8
More updates are coming soon, so stay tuned!
HPP Node v3.9.8 is now live
By
/ April 9, 2026 