diff --git a/.release-please-manifest-beta.json b/.release-please-manifest-beta.json
index c48aad2c..06b2eb2c 100644
--- a/.release-please-manifest-beta.json
+++ b/.release-please-manifest-beta.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.27.0-beta.0"
+  ".": "3.28.0-beta.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e7524a60..b09b19ea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,20 @@ 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).
 
+## [3.28.0-beta.0](https://github.com/the-luap/picpeak/compare/v3.27.0-beta.0...v3.28.0-beta.0) (2026-04-11)
+
+
+### Features
+
+* add COOKIE_SECURE=auto for mixed HTTPS/HTTP deployments ([#298](https://github.com/the-luap/picpeak/issues/298)) ([b1dfbe4](https://github.com/the-luap/picpeak/commit/b1dfbe4c2fe271d8087974d02cf724f04058bdc9))
+* add COOKIE_SECURE=auto for mixed HTTPS/HTTP deployments ([#298](https://github.com/the-luap/picpeak/issues/298)) ([15a8ab4](https://github.com/the-luap/picpeak/commit/15a8ab41fd1c94e3397d300b161cd1fdd459ea05))
+
+
+### Bug Fixes
+
+* guest feedback flow bugs in Masonry grid and PhotoLightbox ([#292](https://github.com/the-luap/picpeak/issues/292)) ([54badef](https://github.com/the-luap/picpeak/commit/54badefc51b834d55530722f87c81a6ade33e35b))
+* guest feedback flow bugs in Masonry grid and PhotoLightbox ([#292](https://github.com/the-luap/picpeak/issues/292)) ([77f07e9](https://github.com/the-luap/picpeak/commit/77f07e9329e47f6ac5040f2e85d2710ebbea3ced))
+
 ## [3.27.0-beta.0](https://github.com/the-luap/picpeak/compare/v3.26.2-beta.0...v3.27.0-beta.0) (2026-04-11)
 
 
diff --git a/backend/package.json b/backend/package.json
index 384e27d4..37db074e 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "picpeak-backend",
-  "version": "3.27.0-beta.0",
+  "version": "3.28.0-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 ee9ebc7a..964c11f6 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,7 +1,7 @@
 {
   "name": "picpeak-frontend",
   "private": true,
-  "version": "3.27.0-beta.0",
+  "version": "3.28.0-beta.0",
   "type": "module",
   "scripts": {
     "dev": "vite",