# Preparation guide for EOS consensus upgrade (hard fork)

> Preparation guide for EOS consensus upgrade (hard fork)

Canonical: https://help.blockzhub.io/articles/preparation-guide-for-eos-consensus-upgrade-hard-fork

The EOS Support Team wants to inform you that on Wednesday, September 21, 2022, EOS block producers will begin carving a new path toward self-determination by executing a coordinated consensus upgrade to [Antelope.io](https://Antelope.io) Leap 3.1 (formerly EOSIO Mandel 3.1).  
  
Anyone running a node must upgrade their nodes before September 21 to continue syncing with the network.  
  
The latest release officially ends support for the legacy V1 History plugin. Therefore, block producers and node operators who have integrations that rely on V1 History must seek [alternative solutions](https://docs.eosnetwork.com/docs/latest/node-operation/migration-guides/v1-history-alternatives).  
  
Read the upgrade guide: <https://eosnetwork.com/blog/mandel-3-1-upgrade-guide/> to learn what actions need to be taken to ensure there is no disruption to your services.  
  
Default EOS code repositories:  
  
Leap official   
<https://github.com/AntelopeIO/leap>  
  
CDT official  
<https://github.com/AntelopeIO/cdt>  
  
DUNE official  
<https://github.com/AntelopeIO/DUNE>  
  
EOS System Contracts official  
<https://github.com/eosnetworkfoundation/eos-system-contracts>  
  
  
  
Recent updates by the EOS Network:  
EOS Network has updated information on <https://coinmarketcap.com/currencies/eos/> and <https://www.coingecko.com/en/coins/eos/>.  
  
Default EOS explorer:  
<https://explorer.eosnetwork.com>  
  
For any questions, reach out to [EOSsupport.io](https://EOSsupport.io/) for live support or email us at [contact@eossupport.io](mailto:contact@eossupport.io).  
  
  
  
Thank you.  
  
Sincerely,  
​

Randall Roland  
​

Founder, Director, CEO of EOS Support  
EOS network DAO Support department