# Updating the Leo Program

You can arbitrarily change the on-chain program to suit your needs.\
\
Setup Instructions

1. Install Leo. You can find the [setup instructions here](https://github.com/AleoHq/leo#2-build-guide).
2. Change `.env.local.example` to `.env.local` and add your `Private_Key`. It must match your `ADDRESS` in the `.env`
3. Edit the [program here](https://github.com/demox-labs/art-factory/blob/main/program/src/main.leo)
4. Once you've changed the program to suit your needs. Run

`yarn program`

This command will compile the leo program and then update the [nft-program.ts](https://github.com/demox-labs/art-factory/blob/main/src/aleo/nft-program.ts) file. This is the actual file that's used within the [Deploy](/admin/deploy.md) page to create the on-chain deployment.

In future updates of the SDK, we hope to remove the Leo dependency as it's only purpose right now is to ensure that we can compile from Leo code to Aleo instructions.


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