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I am hosting my own ethereum node using geth and I have some simple dApps which make use of the web3.js library.

I went through various documentations related to the hard fork, more specifically this one https://blog.ethereum.org/2019/01/11/ethereum-constantinople-upgrade-announcement/

I understand that I have to upgrade my geth node to v1.8.20 https://github.com/ethereum/go-ethereum/releases

Apart from this, do I need to update anything else?

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if you are running the dapps on mainnet, there is nothing to be done from your end w.r.t to code. Please follow below steps

  1. Stop your geth console where you chain is running
  2. Update your geth to latest version (1.8.23 current latest version)
  3. restart your geth console

You are all set and Constantinople fork is set for you geth console. Once you start you geth console, you can view it in admin.nodeInfo, the config contains constantinopleBlock: 7280000.

Hope this helps

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