# \[Action required\] Please upgrade your Flow nodes to v0.39.0 by 31st March 2025 **URL:** \ **Category:** Node Operations\ **Created:** [March 17, 2025, 5:14pm UTC](https://forum.flow.com/t/action-required-please-upgrade-your-flow-nodes-to-v0-39-0-by-31st-march-2025/7386 "2025-03-17T17:14:56Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![vishal](https://avatars.discourse-cdn.com/v4/letter/v/49beb7/32.png) [@vishal](https://forum.flow.com/u/vishal)\ **Post date:** [March 17, 2025, 5:14pm UTC](https://forum.flow.com/t/action-required-please-upgrade-your-flow-nodes-to-v0-39-0-by-31st-march-2025/7386/1 "2025-03-17T17:14:57Z")
Hello Flow node operators, Please upgrade your Flow node(s) to docker tag **`v0.39.0`** (or one of `v0.39.0-without-adx`, `v0.39.0-without-netgo-without-adx`, `v0.39.0-arm`) and restart the node by end of this month - 31st, March 2025. This applies to ALL node roles (access, collection, consensus, verification and execution). This is a rolling upgrade required to perform a zero-downtime Protocol State Upgrade in the first week of April. Nodes which are not updated to v0.39.0 will halt after the Protocol State Upgrade. _Do not delete the data folder._ If you are running multiple nodes, please update the nodes one at a time waiting for a few seconds between each update. * * * # Additional instructions for Pebble Directory This upgrade introduces a new flag called `--pebble-dir`. If not set, the value for the flag will default to `/data/protocol-pebble`. No action is needed unless you observe the error below. If you see the following error: ```auto could not create pebble db (path: /data/protocol-pebble): mkdir /data: permission denied" ``` then please do one of the following: 1. Provide read-write access to the user of the node software process to the data directory so that the node software can automatically create the protocol-pebble directory. 2. Alternatively, you can manually create a directory and pass it as the value to the `--pebble-dir` flag. The pebble directory will eventually store the Pebble database for the node software as we transition to using PebbleDB from BadgerDB. * * * Thank you, Flow Team