diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0748dc9..bf2ebb3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.6.0] - 2026-03-27
+
+### Changed
+- Version alignment with capiscio-core v2.6.0
+- Repository-specific copilot instructions (#7)
+
 ## [2.5.0] - 2026-03-16
 
 ### Changed
diff --git a/package.json b/package.json
index 1e0e981..f8468bf 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "validate-a2a",
-  "version": "2.5.0",
+  "version": "2.6.0",
   "description": "GitHub Action to validate A2A protocol agent cards with three-dimensional scoring",
   "main": "dist/index.js",
   "scripts": {