diff --git a/cistron/CHANGELOG.md b/cistron/CHANGELOG.md
new file mode 100644
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+++ b/cistron/CHANGELOG.md
@@ -0,0 +1,16 @@
+# 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]
+
+## [0.1.0](https://github.com/copyleftdev/cistron/releases/tag/cistron-v0.1.0) - 2026-08-13
+
+### Added
+
+- *(identity)* GA4GH VRS run-length expression support
+- GA4GH-VRS fully-justified normalization matching vrs-python
+- cistron genome-variant kernel with VCF/HGVS boundaries and identity
diff --git a/hgvs/CHANGELOG.md b/hgvs/CHANGELOG.md
new file mode 100644
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+++ b/hgvs/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]
+
+## [0.1.0](https://github.com/copyleftdev/cistron/releases/tag/cistron-hgvs-v0.1.0) - 2026-08-13
+
+### Added
+
+- *(hgvs)* validate genomic rendering against biocommons hgvs
+- *(liftover)* add UCSC .chain file parser
+- cistron genome-variant kernel with VCF/HGVS boundaries and identity
diff --git a/identity/CHANGELOG.md b/identity/CHANGELOG.md
new file mode 100644
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+++ b/identity/CHANGELOG.md
@@ -0,0 +1,17 @@
+# 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]
+
+## [0.1.0](https://github.com/copyleftdev/cistron/releases/tag/cistron-identity-v0.1.0) - 2026-08-13
+
+### Added
+
+- *(identity)* GA4GH VRS run-length expression support
+- GA4GH-VRS fully-justified normalization matching vrs-python
+- *(identity)* byte-for-byte GA4GH VRS identifiers
+- cistron genome-variant kernel with VCF/HGVS boundaries and identity
diff --git a/liftover/CHANGELOG.md b/liftover/CHANGELOG.md
new file mode 100644
index 0000000..5e39a77
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+++ b/liftover/CHANGELOG.md
@@ -0,0 +1,15 @@
+# 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]
+
+## [0.1.0](https://github.com/copyleftdev/cistron/releases/tag/cistron-liftover-v0.1.0) - 2026-08-13
+
+### Added
+
+- *(liftover)* add UCSC .chain file parser
+- add cistron-liftover, fallible interbase coordinate liftover
diff --git a/vcf/CHANGELOG.md b/vcf/CHANGELOG.md
new file mode 100644
index 0000000..3aed4f5
--- /dev/null
+++ b/vcf/CHANGELOG.md
@@ -0,0 +1,14 @@
+# 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]
+
+## [0.1.0](https://github.com/copyleftdev/cistron/releases/tag/cistron-vcf-v0.1.0) - 2026-08-13
+
+### Added
+
+- cistron genome-variant kernel with VCF/HGVS boundaries and identity