diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 2537c1f..f1c1e58 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.4.0"
+  ".": "0.5.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2067ab8..99d5036 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,13 @@
 * Git helper functions extracted from `src/sync.ts` into a new internal
   `src/git-helpers.ts` module (no API change).
 
+## [0.5.0](https://github.com/jim80net/memex-core/compare/memex-core-v0.4.0...memex-core-v0.5.0) (2026-04-09)
+
+
+### Features
+
+* **openspec:** backport existing functionality into baseline specs ([#21](https://github.com/jim80net/memex-core/issues/21)) ([ae92945](https://github.com/jim80net/memex-core/commit/ae9294548d975a0385e0317f18d5550b6b87c29e))
+
 ## [0.4.0](https://github.com/jim80net/memex-core/compare/memex-core-v0.3.1...memex-core-v0.4.0) (2026-04-08)
 
 
diff --git a/package.json b/package.json
index af0a245..c1af3c9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@jim80net/memex-core",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "description": "Shared core engine for memex skill routers — embeddings, indexing, caching, telemetry",
   "license": "MIT",
   "repository": {