Arbitrum Nitro v3.12.2

This release is available as a Docker Image on Docker Hub at offchainlabs/nitro-node:v3.12.2-5f02f3f
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:v3.12.2-5f02f3f-validator which has the extra script /usr/local/bin/split-val-entry.sh as the entrypoint.

v3.12.2 - 2026-10-14

Added

• Add transaction-feed client example implementation. [commit]

Fixed

• Fix for head truncation below a diverged tail group. [commit]
• The sequencer survives a panic while sequencing a delayed message, retrying it after a minute. [commit]
• Returning to 3.12.x after running 3.11.x no longer deletes recent blocks. [commit]