diff --git a/.changesets/adc-dma-minor.md b/.changesets/archive/v5.1.0/adc-dma-minor.md
similarity index 100%
rename from .changesets/adc-dma-minor.md
rename to .changesets/archive/v5.1.0/adc-dma-minor.md
diff --git a/.changesets/gpio-af-bitmaps-patch.md b/.changesets/archive/v5.1.0/gpio-af-bitmaps-patch.md
similarity index 100%
rename from .changesets/gpio-af-bitmaps-patch.md
rename to .changesets/archive/v5.1.0/gpio-af-bitmaps-patch.md
diff --git a/.changesets/revive-releases-bootstrap.md b/.changesets/archive/v5.1.0/revive-releases-bootstrap.md
similarity index 100%
rename from .changesets/revive-releases-bootstrap.md
rename to .changesets/archive/v5.1.0/revive-releases-bootstrap.md
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c37563d5..8d30abd0d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,3 +5,22 @@ The revived semantic-versioning baseline starts at `v5.0.0`.
 
 Historical releases that predate this file remain available in Git tags such as
 `v1.0.0`, `v3.0.0`, `v4.0.0-beta`, and `h10`.
+
+## v5.1.0 - 2026-03-30
+
+### Features
+
+- Refactor the ADC stack around DMA-backed acquisition using new MPU
+  Includes the DMA-backed `ADCDomain` migration, the shared ADC sensor base, and the updated ADC integration/tests in the `adc-dma` branch.
+
+### Fixes
+
+- Fix incorrect GPIO alternate-function availability bitmaps
+  Correct the STM32H723 pin alternate-function masks in `Pin.hpp` so GPIO
+  configuration reflects the actual AF support per pin.
+
+### Internal
+
+- Introduce semver tooling and release automation infrastructure
+  Bootstrap the semiautomated release flow for ST-LIB without publishing a new
+  library version yet.
diff --git a/VERSION b/VERSION
index 0062ac971..831446cbd 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.0.0
+5.1.0