diff --git a/.release-please-manifest-beta.json b/.release-please-manifest-beta.json
index 75f2bffe..65ac1e3e 100644
--- a/.release-please-manifest-beta.json
+++ b/.release-please-manifest-beta.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.51.4-beta.0"
+  ".": "3.51.5-beta.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 45b78d44..f933c238 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to PicPeak will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.51.5-beta.0](https://github.com/the-luap/picpeak/compare/v3.51.4-beta.0...v3.51.5-beta.0) (2026-05-17)
+
+
+### Bug Fixes
+
+* **email:** parse JSON-encoded language setting before using as locale ([ebc7da2](https://github.com/the-luap/picpeak/commit/ebc7da21bea90ff84f5351bef4fd3c2605d3a68f))
+
 ## [3.51.4-beta.0](https://github.com/the-luap/picpeak/compare/v3.51.3-beta.0...v3.51.4-beta.0) (2026-05-17)
 
 
diff --git a/backend/package.json b/backend/package.json
index d0b08bcf..935a5add 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "picpeak-backend",
-  "version": "3.51.4-beta.0",
+  "version": "3.51.5-beta.0",
   "description": "Backend for PicPeak event photo sharing platform",
   "main": "server.js",
   "scripts": {
diff --git a/frontend/package.json b/frontend/package.json
index c712d43c..68b66b4e 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,7 +1,7 @@
 {
   "name": "picpeak-frontend",
   "private": true,
-  "version": "3.51.4-beta.0",
+  "version": "3.51.5-beta.0",
   "type": "module",
   "scripts": {
     "dev": "vite",