The Jovian Hardfork for your OP stack Testnet would be undergoing activation.

This upgrade brings several improvements to the way rollup fees are calculated as well as performing a maintenance update to the fault proof virtual machine.

Action required: No action required if you don't run external nodes.

If you or your partners run an external node, you need to:

• Update op-node to the latest version v1.16.5

• Update op-geth to the latest version v1.101605.0

• Add the following parameters to

  • op-node: --override.jovian=1768978801

  • op-geth:  --override.jovian=1768978801

Make sure your infrastructure is running the latest compatible versions before Wed Jan 21 2026 07:00:00 UTC.

Refer to the Upgrade 17 Notice for full implementation guidance. Feel free to reach out if you have any questions.

Ps. This upgrade will not include Bob, Phala, Katana, Forknet, Mode, Metal, and Zora.