---
# System prepended metadata

title: Testnet upgrade v8.2.3

---

Testnet upgrade v8.2.3
===
## Author

Tomas Guerra, Evmos Core Team

## Software Upgrade being scheduled with this proposal

If successful, this proposal will schedule an Evmos software upgrade at block height [8,037,000](https://testnet.mintscan.io/evmos-testnet/blocks/8037000) from it's current version [v8.1.0](https://github.com/evmos/evmos/releases/tag/v8.1.0) to [v8.2.3](https://github.com/evmos/evmos/releases/tag/v8.2.3) on Evmos Testnet. You may notice that the value for the `name` field in the proposal's plan metadata corresponds to v8.2.0. The reason for this is that upgrade handlers are added in case of mayor (e.g.: v8) and minor (e.g.: v8.2) release versions, and not on point release versions (e.g.: v8.2.3). This proposal has a voting time of 12 hours.

### IMPORTANT NOTE


Please note that because of change [#13540](https://github.com/cosmos/cosmos-sdk/pull/13540) in the v0.45.9 of the Cosmos SDK it is very important to manually modify the `app.toml` and set `iavl-disable-fastnode` to `true` before running with version `v8.2.3` .

`iavl-disable-fastnode = true`

## Motivation

By proposing a scheduled upgrade, we want to implement a smooth and transparent upgrade process, so that testnet does not lag behind mainnet (which is currently in v8.2.3). Software upgrades generally aim to improve current performance and add new features to the Evmos chain. For more information on the types of upgrades, please visit our [Software Upgrade Guide](https://docs.evmos.org/validators/upgrades/overview.html).

## Impact

On a high level, the v8.2.3 software includes the following improvements:

* [Revenue module](https://docs.evmos.org/modules/revenue/): Solution to an issue with the registration of the `feesplit` module during the store upgrade. The `feesplit` module has now been renamed to `revenue`
* Upgrade Cosmos SDK to [v0.45.9](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.45.9) and Ethermint [v0.19.3](https://github.com/evmos/ethermint/releases/tag/v0.19.3)

A full changelog can be found [here](https://github.com/evmos/evmos/releases/tag/v8.2.3).

## Testing

The Evmos core team created an End-to-End testing suite that performs the software upgrade locally. These tests have been completed successfully for this upgrade. The instructions on how to run the End-to-End testing suite can be found [here](https://github.com/ramacarlucho/evmos/blob/rama%2Fe2e_clean/tests/e2e/README.md)