diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 9965a34..aca3a49 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "2.3.0"
+  ".": "2.3.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6c7647d..e74c5c5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,28 @@
 # Changelog
 
+## [2.3.1](https://github.com/PatrickSys/codebase-context/compare/v2.3.0...v2.3.1) (2026-05-11)
+
+
+### Bug Fixes
+
+* **eval:** align ContextBench harness evidence contracts ([4513979](https://github.com/PatrickSys/codebase-context/commit/45139796f4e0cc51854de906b0b40b66beb8b4e3))
+* **eval:** deduplicate blocked ContextBench rows ([99c9753](https://github.com/PatrickSys/codebase-context/commit/99c975359ef1af300ae4dbe4f430b734802bcdb9))
+* **eval:** deduplicate blocked ContextBench rows ([c41e844](https://github.com/PatrickSys/codebase-context/commit/c41e844b6d85318ff9b30b966a84147430e6c7ad))
+* **eval:** harden ContextBench fixture verification ([bed5064](https://github.com/PatrickSys/codebase-context/commit/bed5064c6177f202b24f9564b083bf68068641ba))
+* **eval:** harden ContextBench manifest checks ([04a6cfb](https://github.com/PatrickSys/codebase-context/commit/04a6cfbc2a66953420645173df3e6e5d19cd50bf))
+* **eval:** preserve ContextBench executor model provenance ([867ac70](https://github.com/PatrickSys/codebase-context/commit/867ac700d98ad141ee180f6353784f9dab1f26fc))
+* **format:** format ContextBench harness sources ([b2fa208](https://github.com/PatrickSys/codebase-context/commit/b2fa208a4df0579bfdc41d8ffe2a74b2fae6e93e))
+* **git:** scope local artifact ignores ([ef42e53](https://github.com/PatrickSys/codebase-context/commit/ef42e53b99f1deed3a7e2107d8124b554b890860))
+* **test:** harden ContextBench schema cleanup ([c5a74af](https://github.com/PatrickSys/codebase-context/commit/c5a74afb64c65b255a363e31974fa7be6d58242d))
+* **test:** isolate ContextBench baseline Git env ([6aed9d1](https://github.com/PatrickSys/codebase-context/commit/6aed9d1a93f540f0d4a17142ab4527769b97cecb))
+* **test:** isolate ContextBench git fixtures ([62d3110](https://github.com/PatrickSys/codebase-context/commit/62d3110503b4eca3e4ff65a8403bd0644861d61f))
+* **test:** relax slow Windows integration timeouts ([5675ebd](https://github.com/PatrickSys/codebase-context/commit/5675ebdd41f2af784d86c1ec3e25c9e756f80d6b))
+* **test:** relax slow Windows search timeouts ([cad646d](https://github.com/PatrickSys/codebase-context/commit/cad646d9d940c00ab96baa0ca806070722cced32))
+* **test:** relax zombie guard timeout jitter ([5a5bf68](https://github.com/PatrickSys/codebase-context/commit/5a5bf68302745f90b1dbdfba3ab06cfff961d4d5))
+* **test:** tolerate ContextBench runner cleanup races ([c027703](https://github.com/PatrickSys/codebase-context/commit/c027703092a81c90b5c19371873858e5a87ec00c))
+* **test:** tolerate ContextBench schema cleanup races ([a155d56](https://github.com/PatrickSys/codebase-context/commit/a155d5646dbb283ffac1e71eef7fb26b8a59fa40))
+* **test:** tolerate ContextBench temp cleanup races ([0360cb9](https://github.com/PatrickSys/codebase-context/commit/0360cb97d99337438e1922bf52a76833b9d20fd6))
+
 ## [2.3.0](https://github.com/PatrickSys/codebase-context/compare/v2.2.0...v2.3.0) (2026-04-30)
 
 
diff --git a/package.json b/package.json
index 00aeb98..0b8adea 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "codebase-context",
-  "version": "2.3.0",
+  "version": "2.3.1",
   "description": "Bounded conventions map and local-pattern discovery for AI coding agents. Local-first MCP server with AST-backed hybrid search.",
   "type": "module",
   "main": "./dist/lib.js",