# Please use \`proof-server\` version \`4.0.0\`

**URL:** <https://forum.midnight.network/t/please-use-proof-server-version-4-0-0/727>\
**Category:** Updates\
**Created:** [December 2, 2025, 9:23pm UTC](https://forum.midnight.network/t/please-use-proof-server-version-4-0-0/727 "2025-12-02T21:23:53Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![stev](https://avatars.discourse-cdn.com/v4/letter/s/a6a055/32.png) [@stev](https://forum.midnight.network/u/stev)\
**Post date:** [December 2, 2025, 9:23pm UTC](https://forum.midnight.network/t/please-use-proof-server-version-4-0-0/727/1 "2025-12-02T21:23:53Z")

</div>

Please use `proof-server` version `4.0.0`. Users are reporting that the latest **[proof-server](https://hub.docker.com/r/midnightnetwork/proof-server/tags)**, specifically version 6x is not working.

Here is the common error:

```bash
docker run -p 6300:6300 midnightnetwork/proof-server:latest -- 'midnight-proof-server --network testnet'
error: unexpected argument '--network' found

  tip: a similar argument exists: '--num-workers'

Usage: midnight-proof-server --num-workers <NUM_WORKERS>

For more information, try '--help'.

```

Here is the solution:

```bash
docker run -p 6300:6300 midnightnetwork/proof-server:4.0.0 -- 'midnight-proof-server --network testnet'

```

Please explicitly use version `4.0.0` for the time being.

Thank you for your understanding and support. We’ll keep you updated.