Arbitrum Nitro, the core execution layer for the Arbitrum Rollup, has released version 3.11.0. The update is available as a Docker image and includes several configuration defaults aimed at easing deployment for validators and node operators.
The image is hosted on Docker Hub under the tag offchainlabs/nitro-node:v3.11.0-a618155. Users can pull the image directly and run it with the standard entrypoint, which automatically sets up the Nitro binary and its runtime environment.
A key change in this release is the inclusion of default flags for the Nitro entrypoint. The flag --validation.wasm.allowed-wasm-module-roots points to two directories – /home/user/nitro-legacy/machines and /home/user/target/machines – that contain the WASM modules required for transaction validation.
Validators who are not using a split validation server, which is common for most setups, should continue to use the standard Nitro image. The provided defaults allow the validator to run without additional configuration, reducing the risk of misconfiguration.
Full release notes, including changelog details and installation instructions, can be found on the Offchain Labs GitHub releases page. The documentation also covers how to override the entrypoint if custom flags are needed.