# Deploying smart contracts

## Using Gamma CLI

To deploy a smart contract run the command `gamma-cli deploy` and provide the contract name. You will also need to provide the source code for the contract.

For example, to deploy a contract named **MyToken**

```
gamma-cli deploy contract.go -name MyToken -signer user1
```

## Command parameters

```
gamma-cli deploy <CODE_FILE> -name [CONTRACT_NAME] -signer [ID_FROM_KEYS_JSON]
```

* `<CODE_FILE>` Source file for the smart contract being deployed, normally .go or .js file
* `-name` Name of the contract on the blockchain (used by future transaction senders)
* `-signer` Account ID of the signer of the deploy transaction (from `orbs-test-keys.json`)

{% hint style="info" %}
If you don't provide an explicit contract name with `-name`, your code file name will be used.
{% endhint %}

## Caveats

Contracts are immutable. If you want to update the code for a contract, deploy it again under a different name.

Remember that Gamma server is an in-memory blockchain. When you stop the server with `gamma-cli stop-local` all contracts will disappear.

Contracts are currently limited to a single source file. If you have multiple files, combine them into one.