Node operators should upgrade to Nitro v3.9.x before the ArbOS 50 (Fusaka) network upgrade on ArbSepolia, scheduled for November 20, 2025, at 17:00 UTC (12:00 PM ET).
This release adds validator support for ArbOS50. Compared to v3.9.0, the only change is in the -validator image, so it is only a required upgrade if you are running a validator.
This release is available as a Docker Image on Docker Hub at offchainlabs/nitro-node:v3.9.2-52e8959
This Docker image specifies default flags in its entrypoint which should be replicated if you're overriding the entrypoint: /usr/local/bin/nitro --validation.wasm.allowed-wasm-module-roots /home/user/nitro-legacy/machines,/home/user/target/machines
If you're running a validator without a split validation server (this will be true of most validators), you should instead use the image offchainlabs/nitro-node:v3.9.2-52e8959-validator which has the extra script /usr/local/bin/split-val-entry.sh as the entrypoint (no need to override the default entrypoint).
What's Changed
- Prune old wasm module roots: #4015
- Port - Fix parent chain reader bug in creating smart contract wallet [PR-4019]: #4020
- Add legacy validator back for split validator: #4017
Full Changelog: v3.9.1...v3.9.2