diff --git a/CHANGELOG.md b/CHANGELOG.md
index b14614b..f22bdda 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,28 @@ 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]
+
+## [2.3.1] - 2025-01-14
+
+### Changed
+- **CORE VERSION**: Now downloads `capiscio-core` v2.3.1
+
+### Fixed
+- Aligned all version references across package metadata
+
+## [2.3.0] - 2025-01-13
+
+### Changed
+- **CORE VERSION**: Now downloads `capiscio-core` v2.3.0
+- **RFC-002 v1.3**: Badge validation now includes staleness fail-closed behavior
+
+## [2.2.0] - 2025-12-10
+
+### Changed
+- **VERSION ALIGNMENT**: All CapiscIO packages now share the same version number.
+- **CORE VERSION**: Now downloads `capiscio-core` v2.2.0
+
 ## [1.1.0] - 2025-11-21
 
 ### Changed
diff --git a/package-lock.json b/package-lock.json
index 768aff5..f312e1e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,13 +1,13 @@
 {
   "name": "validate-a2a",
-  "version": "1.0.0",
+  "version": "2.3.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "validate-a2a",
-      "version": "1.0.0",
-      "license": "MIT",
+      "version": "2.3.1",
+      "license": "Apache-2.0",
       "dependencies": {
         "@actions/core": "^1.11.1",
         "@actions/exec": "^1.1.1",
diff --git a/package.json b/package.json
index 8ab02ea..e78a6bb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "validate-a2a",
-  "version": "2.2.0",
+  "version": "2.3.1",
   "description": "GitHub Action to validate A2A protocol agent cards with three-dimensional scoring",
   "main": "dist/index.js",
   "scripts": {