diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7b97d2..270182d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ Format: [Keep a Changelog](https://keepachangelog.com/). Versions follow
 
 ## [Unreleased]
 
+## [0.1.0] - 2026-10-23
+
+Host-tested only: no Slice uses it yet, and it has not run on a board.
+
 ### Added
 - Repository skeleton: README, scope rules (linked to the BREADS spec), MPL-2.0
   licence, and the PlatformIO manifest.
diff --git a/README.md b/README.md
index 782d2c3..02eebea 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 Shared firmware mechanisms for BREADS Slices: the code every Slice runs the
 same way, written once and host-tested.
 
-Nothing is released yet. Progress is tracked in
+Moving the Slices onto it is tracked in
 [feastorg/.github#4](https://github.com/feastorg/.github/issues/4).
 
 ## Use
diff --git a/library.json b/library.json
index 59fa7d3..0aaeaf3 100644
--- a/library.json
+++ b/library.json
@@ -1,6 +1,6 @@
 {
   "name": "bread-slice-core",
-  "version": "0.0.0",
+  "version": "0.1.0",
   "description": "Shared firmware mechanisms for BREADS Slices: status LED, e-stop sampling, watchdog latch, strict parsing",
   "keywords": [
     "bread",