diff --git a/dokan-sys/CHANGELOG.md b/dokan-sys/CHANGELOG.md
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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/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.3.1] - 2022-10-04
+
+### Added
+
+- Various `FILE_*` constants.
+- `VOLUME_SECURITY_DESCRIPTOR_MAX_SIZE`
+
+### Changed
+
+- Upgrade to **Dokan 2.0.6**.
+
+[unreleased]: https://github.com/dokan-dev/dokan-rust/compare/dokan-sys@v0.3.1...HEAD
+[0.3.1]: https://github.com/dokan-dev/dokan-rust/releases/tag/dokan-sys@v0.3.1
diff --git a/dokan/CHANGELOG.md b/dokan/CHANGELOG.md
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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/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.3.1] - 2022-10-04
+
+### Added
+
+- `FileSystemHandle` to send a `DOKAN_HANDLE` across threads.
+- `map_win32_error_to_ntstatus`
+- `win32_ensure`
+- In `memfs` example: add status messages and show how another thread can unmount the file system.
+
+### Changed
+
+- Upgrade to **Dokan 2.0.6** through `dokan-sys`.
+- Split the code into multiple files.
+- Replace `Drive` builder by `FileSystemMounter` and `MountOptions`.
+- Operations errors are simply `NTSTATUS`.  
+  To return errors from `GetLastError`, use `win32_ensure` or `map_win32_error_to_ntstatus`.
+- Access mount point list through an iterator.
+
+### Fixed
+
+- Access to dangling pointer caused panic when the file system handle was used.  
+  It's the reason for `FileSystemMounter`, which keeps needed variables onto the stack.
+
+[unreleased]: https://github.com/dokan-dev/dokan-rust/compare/dokan@v0.3.1...HEAD
+[0.3.1]: https://github.com/dokan-dev/dokan-rust/releases/tag/dokan@v0.3.1