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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+
+## [Unreleased]
+
+### Added
+- TON (The Open Network) not-so-smart-contracts examples (#385)
+- Medusa documentation and CI integration (#358, #361, #373, #388, #398)
+- Echidna symbolic execution documentation (#401, #402)
+- Expanded testing modes documentation (#325)
+- Non-standard ERC20 tokens list (#269)
+- New EVM opcodes documentation (#319)
+- Shapella and Deneb fork updates (#352)
+
+### Changed
+- Updated Slither documentation to use mdbook format (#397)
+- Updated Cairo/StarkNet documentation and links (#338, #360)
+- Updated Echidna configuration documentation (#362, #357)
+- Refreshed CODEOWNERS (#395)
+- Various link fixes and documentation improvements (#346, #390, #405, #411)
+
+### Fixed
+- Fixed broken links throughout documentation (#359, #363, #367)
+- Fixed HEVM cheat codes links (#359)
+- Fixed Yellow Paper links (#363)
+
+## [0.3.0] - 2023-02-23
+
+Introduced [secure-contracts.com](https://secure-contracts.com) website.
+
+### Added
+- Solana not-so-smart-contracts examples
+- Two advanced Echidna tutorials: multi-abi and optimization mode
+- EVM-related guidelines
+- mdbook integration for documentation browsing (#215)
+- CONTRIBUTING.md guidelines (#216)
+- CIP fork updates (#217)
+
+### Changed
+- Reorganized documentation structure for mdbook compatibility (#218, #219)
+
+## [0.2.0] - 2022-11-30
+
+### Added
+- Not-so-smart-contracts examples for Algorand, Cairo, Cosmos, and Substrate
+- Two new Echidna exercises
+- Additional guidance for using Echidna to find smart contract vulnerabilities
+
+## [0.1.0] - 2022-08-05
+
+Initial release.
+
+### Added
+- 4 development guidelines: best practices, token integration, incident response, secure workflows
+- EIPs included in each Ethereum mainnet fork
+- Program analysis training materials for Echidna, Slither, and Manticore
+- EVM learning resources
+
+[Unreleased]: https://github.com/crytic/building-secure-contracts/compare/0.3.0...HEAD
+[0.3.0]: https://github.com/crytic/building-secure-contracts/compare/0.2.0...0.3.0
+[0.2.0]: https://github.com/crytic/building-secure-contracts/compare/0.1.0...0.2.0
+[0.1.0]: https://github.com/crytic/building-secure-contracts/releases/tag/0.1.0