Download Latest Version Hardhat v3.1.0 source code.tar.gz (5.9 MB)
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Hardhat v3.1.0 source code.tar.gz 2025-12-10 5.9 MB
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Hardhat v3.1.0 source code.zip 2025-12-10 7.3 MB
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README.md 2025-12-10 862 Bytes
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This release sets Osaka as the default hardfork for for local networks, adds support for Solidity 0.8.31 and brings unified test output for Solidity tests and Node.js test runner.

Minor Changes

  • 7b851f3: Bumped EDR version to 0.12.0-next.17
  • Changed default L1 hardfork to Osaka
  • Changed default OP stack hardfork to Isthmus
  • Fixed default transaction gas limit for post-Osaka hardforks in OP stack and generic chains

Patch Changes

  • 7697451: Test summaries are now merged when running multiple test tasks (#7053)
  • a3bf244: Fixed the download of solc, which broke for v0.8.31

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Source: README.md, updated 2025-12-10