# \[Mainnet\] Update two protocol parameters for IBC Eureka activation

**URL:** <https://forum.namada.net/t/mainnet-update-two-protocol-parameters-for-ibc-eureka-activation/1906>\
**Category:** Proposal 🗳️\
**Created:** [1 December 2025 18:01 UTC](https://forum.namada.net/t/mainnet-update-two-protocol-parameters-for-ibc-eureka-activation/1906 "2025-12-01T18:01:50Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![brentstone](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.namada.net/brentstone/32/464_2.png) [@brentstone](https://forum.namada.net/u/brentstone)\
**Post date:** [1 December 2025 18:01 UTC](https://forum.namada.net/t/mainnet-update-two-protocol-parameters-for-ibc-eureka-activation/1906/1 "2025-12-01T18:01:50Z")

</div>

Following the incoming upgrade to `v201.0.7` as described [here](https://forum.namada.net/t/signalling-upgrade-to-v201-0-7-at-block-4514500/1899), we must also increase the values two protocol parameters - the `max_tx_bytes` and `max_proposal_code_size`.

This is needed so that subsequently, we can upgrade the `tx_ibc.wasm` on-chain, which will activate the IBC Eureka connection via that transaction. This wasm is quite large, and these protocol parameter value increases are needed in order to put the new large wasm on-chain.

These db changes have been made on Housefire testnet in Props [41](https://testnet.namadillo.app/governance/proposal/41) and [44](https://testnet.namadillo.app/governance/proposal/44) successfully.

---

<div class="post-metadata">

**Author:** ![Daniel](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.namada.net/daniel/32/186_2.png) [@Daniel](https://forum.namada.net/u/Daniel)\
**Post date:** [1 December 2025 21:36 UTC](https://forum.namada.net/t/mainnet-update-two-protocol-parameters-for-ibc-eureka-activation/1906/2 "2025-12-01T21:36:06Z")

</div>

✅ Hashes match on both governance proposal (#38) and [namada-governance-upgrades](https://github.com/namada-net/namada-governance-upgrades/blob/6dd327f4b95154aba44b595798ec0e04ce1d8ea6/proposals/mainnet/update-params-pre-ibc-eureka/src/lib.rs) repository.

```auto
Data: Hash: 51C29AC1D380438F184D7ED3053825B5F5A2529FAA11ECB84E2D68B3BB0AB213

```

```auto
sha256sum update_params_pre_ibc_eureka.wasm
51c29ac1d380438f184d7ed3053825b5f5a2529faa11ecb84e2d68b3bb0ab213 update_params_pre_ibc_eureka.wasm

```