> For the complete documentation index, see [llms.txt](https://stavr-team.gitbook.io/nodes-guides/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://stavr-team.gitbook.io/nodes-guides/testnets/c4e/upgrade.md).

# Upgrade

***🟢UPDATE🟢***** 14.08.24** 

*<mark style="color:yellow;">at Height -> xxxxxxxxx</mark>*

```python
cd $HOME/c4e-chain
git fetch --all
git checkout v1.4.0
make install
c4ed version --long | grep -e commit -e version
#commit: 025f9b0e957f73e3d42fa84d017e812ae9e0e2f8
#version: 1.4.0
sudo systemctl restart c4ed && sudo journalctl -u c4ed -f -o cat
#consensus
curl -s http://localhost:26657/consensus_state  | jq '.result.round_state.height_vote_set[0].prevotes_bit_array'
```

&#x20;                                    **GitHub**

<https://github.com/chain4energy/c4e-chain/tags>