# Celestia Mocha testnet: operators asked to upgrade to celestia-app v10.6.0-mocha

On 5 November 2026 Celestia asked Mocha testnet operators to upgrade consensus nodes and Fibre to celestia-app v10.6.0-mocha as soon as possible. The release brings consensus, proof-verification and Fibre fixes.

- Published: 2026-11-06T23:04:57Z
- Updated: 2026-11-06T23:04:57Z
- Chains: Celestia Mocha
- Source: https://status.celestia.org/incidents/01M6P73SMZYYMJQ766EAV2XXER
- Web page: https://bitbasic.com/news/18-celestia-mocha-testnet-operators-asked-to-upgrade-to-celestia-app-v1060-mocha
- By: BitBasic (https://bitbasic.com), run by BitNordic

On 5 November 2026 Celestia asked operators on its Mocha testnet to upgrade both their consensus nodes and their Fibre servers to celestia-app v10.6.0-mocha "as soon as possible". The notice gives no hard deadline.

## What is in the release

According to Celestia's notice:

- **Consensus layer:** celestia-core moves from v0.42.5 to v0.42.8. The new version fixes block propagation, the CAT mempool, p2p peer identity validation and the JSON-RPC server. `tx_search` and `block_search` now apply `max_search_results` to the whole query.
- **Proofs:** ShareProof and RowProof verification now checks each proof's position in the data square. Clients that verify proofs, such as celestia-node, should use this release's packages.
- **Fibre:** escrow deposit transactions with a non-canonical signer address or a denomination other than utia are now kept out of the mempool and new proposals. Blocks that already contain such transactions stay valid. Other fixes cover the payment promise cache and a client crash on incomplete provider responses.
- **Hyperlane and IBC:** hyperlane-cosmos is bumped to v1.3.3, which tightens signature and routing checks. The IBC capability module moves to a fork that is safe for concurrent use.

## What it means for operators

Mocha validators and other consensus node operators should install v10.6.0-mocha and restart consensus nodes and Fibre. Celestia's docs now list v10.6.0-mocha as Mocha's celestia-app version, alongside celestia-node v0.34.4-mocha.

Celestia usually ships releases to Mocha before mainnet. The v10.4.0 and v10.5.0 releases, for example, reached Mocha first and mainnet within days. The 5 November notice does not announce a mainnet release of v10.6.0, and Celestia's mainnet docs still list v10.5.0.

Related: on 31 October Celestia's status page told operators on both Mocha and mainnet to apply two kernel settings (disabling MPTCP and `tcp_migrate_req`) and then restart all nodes, to mitigate a TCP vulnerability.

## Sources

- [Celestia status: Mocha celestia-app v10.6.0-mocha upgrade (5 November 2026)](https://status.celestia.org/incidents/01M6P73SMZYYMJQ766EAV2XXER)
- [Celestia status: TCP vulnerability mitigation (31 October 2026)](https://status.celestia.org/incidents/01M6AJW2JNSTEZW166Y5P75YBE)
- [Celestia status: notice history](https://status.celestia.org/history)
- [Celestia docs: Mocha testnet](https://docs.celestia.org/operate/networks/mocha-testnet)
- [BitBasic: Celestia Mocha dashboard](https://bitbasic.com/celestia-mocha)