diff --git a/.mokogitea/CLAUDE.md b/.mokogitea/CLAUDE.md
index 4397c69..06e44f5 100644
--- a/.mokogitea/CLAUDE.md
+++ b/.mokogitea/CLAUDE.md
@@ -8,7 +8,7 @@ Joomla site template — successor to MokoCassiopeia. Base template for all Moko
 |---|---|
 | **Element** | `tpl_mokoonyx` |
 | **Type** | Joomla site template |
-| **Language** | PHP 8.1+ / CSS / JS |
+| **Language** | PHP 8.3+ / CSS / JS |
 | **Branch** | develop on `dev`, merge to `main` (protected) |
 | **Wiki** | [MokoOnyx Wiki](https://git.mokoconsulting.tech/MokoConsulting/MokoOnyx/wiki) |
 
@@ -58,6 +58,6 @@ Client repos (`client-clarksvillefurs`, `client-optainfunding`, etc.) install `t
 
 ## Coding Standards
 
-- PHP 8.1+ minimum
+- PHP 8.3+ minimum
 - SPDX license headers on all PHP files
 - `defined('_JEXEC') or die;` on all PHP files
diff --git a/.mokogitea/workflows/issue-branch.yml b/.mokogitea/workflows/issue-branch.yml
index 1924d3c..1df8ba1 100644
--- a/.mokogitea/workflows/issue-branch.yml
+++ b/.mokogitea/workflows/issue-branch.yml
@@ -5,7 +5,7 @@
 # FILE INFORMATION
 # DEFGROUP: MokoGitea.Workflow
 # INGROUP: mokocli.Automation
-# VERSION: 02.28.01
+# VERSION: 02.28.04
 # BRIEF: Auto-create feature branch when an issue is opened
 
 name: "Universal: Issue Branch"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3ae09e..357cd63 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,11 +8,11 @@
  DEFGROUP: Joomla.Template.Site
  INGROUP: MokoOnyx.Documentation
  PATH: ./CHANGELOG.md
- VERSION: 02.28.01
+ VERSION: 02.28.04
  BRIEF: Changelog file documenting version history of MokoOnyx
  -->
 
-# Changelog — MokoOnyx (VERSION: 02.28.01)
+# Changelog — MokoOnyx (VERSION: 02.28.04)
 ## [Unreleased]
 
 ## [02.28.00] --- 2026-07-13
diff --git a/README.md b/README.md
index 5c768b1..ba00d91 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,8 @@ A modern, lightweight Joomla site template built on Cassiopeia with Font Awesome
 |---|---|
 | **Type** | Joomla Site Template |
 | **Version** | 02.22.00 |
-| **Joomla** | 5.x / 6.x |
-| **PHP** | 8.1+ |
+| **Joomla** | 6.x+ |
+| **PHP** | 8.3+ |
 | **License** | GPL-3.0-or-later |
 | **Replaces** | MokoCassiopeia (auto-migrates on install) |
 | **Repository** | [MokoGitea](https://git.mokoconsulting.tech/MokoConsulting/MokoOnyx) (primary) |
@@ -53,8 +53,8 @@ On install, MokoOnyx automatically migrates settings, content references, and cu
 
 ### Requirements
 
-- Joomla 5.x or 6.x
-- PHP 8.1 or higher
+- Joomla 6.x or higher
+- PHP 8.3 or higher
 
 ---
 
diff --git a/SECURITY.md b/SECURITY.md
index 10b973f..4d752a9 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -10,7 +10,7 @@
  INGROUP: MokoOnyx.Governance
  REPO: https://git.mokoconsulting.tech/MokoConsulting/MokoOnyx
  FILE: SECURITY.md
- VERSION: 02.28.01
+ VERSION: 02.28.04
  BRIEF: Security policy and vulnerability reporting process for MokoOnyx.
  PATH: /SECURITY.md
  NOTE: This policy is process oriented and does not replace secure engineering practices.
diff --git a/composer.json b/composer.json
index 0d3b0ca..62a6192 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     ],
     "require": {
         "ext-zip": "*",
-        "php": ">=8.1"
+        "php": ">=8.3"
     },
     "require-dev": {
         "mokoconsulting-tech/enterprise": "^4.0"
diff --git a/source/html/layouts/joomla/module/card.php b/source/html/layouts/joomla/module/card.php
index 5b86e98..35e2c7a 100644
--- a/source/html/layouts/joomla/module/card.php
+++ b/source/html/layouts/joomla/module/card.php
@@ -10,7 +10,7 @@
  * INGROUP: MokoOnyx
  * REPO: https://git.mokoconsulting.tech/MokoConsulting/MokoOnyx
  * PATH: /html/layouts/joomla/module/card.php
- * VERSION: 02.28.01
+ * VERSION: 02.28.04
  * BRIEF: Custom card module chrome — renders module titles for all modules
  */
 
diff --git a/source/html/layouts/mokoonyx/article-metadata.php b/source/html/layouts/mokoonyx/article-metadata.php
index 5689186..ad9a3c9 100644
--- a/source/html/layouts/mokoonyx/article-metadata.php
+++ b/source/html/layouts/mokoonyx/article-metadata.php
@@ -11,7 +11,7 @@
  * INGROUP: MokoOnyx.Layouts
  * REPO: https://git.mokoconsulting.tech/MokoConsulting/MokoOnyx
  * PATH: /src/html/layouts/mokoonyx/article-metadata.php
- * VERSION: 02.28.01
+ * VERSION: 02.28.04
  * BRIEF: Article metadata footer layout -- renders jcfields grouped by field group
  */
 
diff --git a/source/media/css/a11y-high-contrast.css b/source/media/css/a11y-high-contrast.css
index e849bc9..bf6a53b 100644
--- a/source/media/css/a11y-high-contrast.css
+++ b/source/media/css/a11y-high-contrast.css
@@ -10,7 +10,7 @@
  * INGROUP: MokoOnyx.Accessibility
  * REPO: https://git.mokoconsulting.tech/MokoConsulting/MokoOnyx
  * PATH: ./media/css/a11y-high-contrast.css
- * VERSION: 02.28.01
+ * VERSION: 02.28.04
  * BRIEF: High-contrast stylesheet for accessibility toolbar
  */
 
diff --git a/source/templateDetails.xml b/source/templateDetails.xml
index 13dffca..25535c8 100644
--- a/source/templateDetails.xml
+++ b/source/templateDetails.xml
@@ -35,7 +35,7 @@
 	</updateservers>
 	<dlid prefix="dlid=" suffix=""/>
 	<name>mokoonyx</name>
-	<version>02.28.01</version>
+	<version>02.28.04</version>
 	<scriptfile>script.php</scriptfile>
 	<creationDate>2026-05-16</creationDate>
 	<author>Jonathan Miller || Moko Consulting</author>