Flow Mainnet Second Height Coordinated Upgrade on Jan 2nd at 15:00 UTC

Hello Execution, Verification and Access Node Operators,

There will be a height coordinated upgrade on Flow mainnet today Jan, 2nd at 15:00 UTC

Docker tag: Will be shared before the upgrade.

Actions needed from your side now:


  1. Verification node operators -

Please update your docker to the new tag and restart the node.

Do not delete the data folder.

Please complete this action within 24 hour of the announcement

If you are running multiple nodes, please restart the nodes one after the other (instead of all at once).


  1. Access node operators -

Please update your docker to the new tag.

Do not delete the data folder.


  1. Execution node operators -

Please update your docker to the new tag.
If you do not update now, Execution nodes will stop executing blocks at a particular height and must be restarted with a new docker tag.
You can monitor the block height by querying the metric execution_runtime_last_executed_block_height.
e.g. curl -s http://127.0.0.1:8080/metrics | grep -E '^(execution_runtime_last_executed_block_height)'

Once the execution node has stopped executing blocks, the height reported by the metric will no longer advance.

Do not delete the data folder.
Please complete this action immediately for the execution node


No action needed for Collection and Consensus node type.

This is NOT a spork, and the network will keep running during the upgrade.

Thank you for your cooperation,
Flow Team.