diff --git a/CHANGELOG.md b/CHANGELOG.md
index 79360048fd..a35dcee209 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,18 @@
 
 ---
 
+## [2.5.9] - 2026-03-15
+
+> Codex native passthrough fix + route body validation hardening.
+
+### 🐛 Bug Fixes
+
+- **fix(codex)**: Preserve native Responses API passthrough for Codex clients — avoids unnecessary translation mutations (PR #387)
+- **fix(api)**: Validate request bodies on pricing/sync and task-routing routes — prevents crashes from malformed inputs (PR #388)
+- **fix(auth)**: JWT secrets persist across restarts via `src/lib/db/secrets.ts` — eliminates 401 errors after pm2 restart (PR #388)
+
+---
+
 ## [2.5.8] - 2026-03-15
 
 > Build fix: restore VPS connectivity broken by v2.5.7 incomplete publish.
diff --git a/docs/openapi.yaml b/docs/openapi.yaml
index 767bc0955b..c905a75f1e 100644
--- a/docs/openapi.yaml
+++ b/docs/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.1.0
 info:
   title: OmniRoute API
-  version: 2.5.8
+  version: 2.5.9
   description: |
     OmniRoute is a local-first AI API proxy router. It provides an OpenAI-compatible
     endpoint that routes requests to multiple AI providers with load balancing,
diff --git a/package-lock.json b/package-lock.json
index 5c069a966b..8d1cd5c623 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "omniroute",
-  "version": "2.5.8",
+  "version": "2.5.9",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "omniroute",
-      "version": "2.5.8",
+      "version": "2.5.9",
       "hasInstallScript": true,
       "license": "MIT",
       "workspaces": [
diff --git a/package.json b/package.json
index ffc5496946..56f347a1ab 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "omniroute",
-  "version": "2.5.8",
+  "version": "2.5.9",
   "description": "Smart AI Router with auto fallback — route to FREE & cheap models, zero downtime. Works with Cursor, Cline, Claude Desktop, Codex, and any OpenAI-compatible tool.",
   "type": "module",
   "bin": {