# Tools, Library and SDK versions for Cadence 1.0

**URL:** <https://forum.flow.com/t/tools-library-and-sdk-versions-for-cadence-1-0/6434>\
**Category:** 🛠 Developer Tools\
**Tags:** flow-sdk-go, flow-sdk-js, fcl\
**Created:** [August 28, 2024, 7:13pm UTC](https://forum.flow.com/t/tools-library-and-sdk-versions-for-cadence-1-0/6434 "2024-08-28T19:13:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![vishal](https://avatars.discourse-cdn.com/v4/letter/v/49beb7/32.png) [@vishal](https://forum.flow.com/u/vishal)\
**Post date:** [August 28, 2024, 7:13pm UTC](https://forum.flow.com/t/tools-library-and-sdk-versions-for-cadence-1-0/6434/1 "2024-08-28T19:13:25Z")

</div>

Here are the latest releases of the tools, libraries and SDKs that support Cadence 1.0.

Flow Testnet has been upgraded and is currently running Cadence 1.0.

Please use these versions as the minimum version for Testnet.

1. fcl -[@onflow/fcl@1.11.0](https://github.com/onflow/fcl-js/releases/tag/%40onflow%2Ffcl%401.11.0)
2. flow-py-sdk - [v2.0.1](https://pypi.org/project/flow-py-sdk/2.0.1/) (published to pypi)
3. flow-go-sdk - [v1.0.0-preview.53](https://github.com/onflow/flow-go-sdk/releases/tag/v1.0.0-preview.53)
4. [flow-jvm-sdk](https://github.com/onflow/flow-jvm-sdk) - v2.0.0 (published to maven)
5. flow-cli - [v1.21.0-cadence-v1.0.0-preview.37](https://github.com/onflow/flow-cli/releases/tag/v1.21.0-cadence-v1.0.0-preview.37)

On Sept 4th, Flow mainnet will also be upgraded to Cadence 1.0. Please use these libraries for mainnet after that.

Thank you