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Update a Contract

Update an existing contract deployed to a Flow account using the Flow CLI.


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flow accounts update-contract <filename> [<argument> <argument>...] [flags]

⚠️ Deprecation notice: using name argument in update contract command will be deprecated soon.


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flow accounts update-contract <name> <filename> [<argument> <argument>...] [flags]

Example Usage​


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> flow accounts update-contract ./FungibleToken.cdc
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Contract 'FungibleToken' updated on account '0xf8d6e0586b0a20c7'
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Address 0xf8d6e0586b0a20c7
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Balance 99999999999.70000000
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Keys 1
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Key 0 Public Key 640a5a359bf3536d15192f18d872d57c98a96cb871b92b70cecb0739c2d5c37b4be12548d3526933c2cda9b0b9c69412f45ffb6b85b6840d8569d969fe84e5b7
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Weight 1000
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Signature Algorithm ECDSA_P256
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Hash Algorithm SHA3_256
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Revoked false
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Sequence Number 6
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Index 0
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Contracts Deployed: 1
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Contract: 'FungibleToken'

Testnet Example


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> flow accounts update-contract ./FungibleToken.cdc --signer alice --network testnet
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Contract 'FungibleToken' updated on account '0xf8d6e0586b0a20c7'
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Address 0xf8d6e0586b0a20c7
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Balance 99999999999.70000000
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Keys 1
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Key 0 Public Key 640a5a359bf3536d15192f18d872d57c98a96cb871b92b70cecb0739c2d5c37b4be12548d3526933c2cda9b0b9c69412f45ffb6b85b6840d8569d969fe84e5b7
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Weight 1000
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Signature Algorithm ECDSA_P256
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Hash Algorithm SHA3_256
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Revoked false
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Sequence Number 6
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Index 0
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Contracts Deployed: 1
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Contract: 'FungibleToken'

Make sure alice account is defined in flow.json

Arguments​

Name​

  • Name: name
  • Valid inputs: Any string value

Name of the contract as it is defined in the contract source code.

⚠️ Deprecation notice: use filename argument only, no need to use name argument.

Filename​

  • Name: filename
  • Valid inputs: Any filename and path valid on the system.

Filename of the file containing contract source code.

Arguments​

  • Name: argument
  • Valid inputs: valid cadence values matching argument type in transaction code.

Input arguments values matching corresponding types in the source code and passed in the same order.

Example:


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> flow accounts update-contract ./contract.cdc Hello 2

Transaction code:


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pub contract HelloWorld {
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init(a:String, b:Int) {
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}
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}

Flags​

Signer​

  • Flag: --signer
  • Valid inputs: the name of an account defined in the configuration (flow.json)

Specify the name of the account that will be used to sign the transaction.

Show Diff​

  • Flag: --show-diff
  • Valid inputs: true, false

Shows a diff to approve before updating between deployed contract and new contract updates.

Arguments JSON​

  • Flag: --args-json
  • Valid inputs: arguments in JSON-Cadence form.
  • Example: flow accounts update-contract ./tx.cdc '[{"type": "String", "value": "Hello"}]'

Arguments passed to the Cadence transaction in Cadence JSON format. Cadence JSON format contains type and value keys and is documented here.

Include Fields​

  • Flag: --include
  • Valid inputs: contracts

Specify fields to include in the result output. Applies only to the text output.

Host​

  • Flag: --host
  • Valid inputs: an IP address or hostname.
  • Default: 127.0.0.1:3569 (Flow Emulator)

Specify the hostname of the Access API that will be used to execute the command. This flag overrides any host defined by the --network flag.

Network Key​

  • Flag: --network-key
  • Valid inputs: A valid network public key of the host in hex string format

Specify the network public key of the Access API that will be used to create a secure GRPC client when executing the command.

Network​

  • Flag: --network
  • Short Flag: -n
  • Valid inputs: the name of a network defined in the configuration (flow.json)
  • Default: emulator

Specify which network you want the command to use for execution.

Filter​

  • Flag: --filter
  • Short Flag: -x
  • Valid inputs: a case-sensitive name of the result property

Specify any property name from the result you want to return as the only value.

Output​

  • Flag: --output
  • Short Flag: -o
  • Valid inputs: json, inline

Specify the format of the command results.

Save​

  • Flag: --save
  • Short Flag: -s
  • Valid inputs: a path in the current filesystem

Specify the filename where you want the result to be saved

Log​

  • Flag: --log
  • Short Flag: -l
  • Valid inputs: none, error, debug
  • Default: info

Specify the log level. Control how much output you want to see during command execution.

Configuration​

  • Flag: --config-path
  • Short Flag: -f
  • Valid inputs: a path in the current filesystem
  • Default: flow.json

Specify the path to the flow.json configuration file. You can use the -f flag multiple times to merge several configuration files.

Version Check​

  • Flag: --skip-version-check
  • Default: false

Skip version check during start up to speed up process for slow connections.