diff --git a/CHANGELOG.md b/CHANGELOG.md
index 715fb958..eefea02b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,16 @@
 
 ---
 
+## [3.1.3] — 2026-03-26
+
+### 🌍 i18n & Community
+
+- **~70 missing translation keys** added to `en.json` and 12 languages (PR #652 by @zen0bit)
+- **Czech documentation updated** — CLI-TOOLS, API_REFERENCE, VM_DEPLOYMENT guides (PR #652)
+- **Translation validation scripts** — `check_translations.py` and `validate_translation.py` for CI/QA (PR #651 by @zen0bit)
+
+---
+
 ## [3.1.2] — 2026-03-26
 
 ### 🐛 Bug Fixes
diff --git a/docs/openapi.yaml b/docs/openapi.yaml
index 888f6034..7befd752 100644
--- a/docs/openapi.yaml
+++ b/docs/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.1.0
 info:
   title: OmniRoute API
-  version: 3.1.2
+  version: 3.1.3
   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 8365e27f..ce292be8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "omniroute",
-  "version": "3.1.2",
+  "version": "3.1.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "omniroute",
-      "version": "3.1.2",
+      "version": "3.1.3",
       "hasInstallScript": true,
       "license": "MIT",
       "workspaces": [
diff --git a/package.json b/package.json
index 23266f87..8ae9dbe6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "omniroute",
-  "version": "3.1.2",
+  "version": "3.1.3",
   "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": {