diff --git a/CHANGELOG.md b/CHANGELOG.md
index 17a336c0b59f..950e98a70f0b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## [v4.2.3](https://github.com/codeigniter4/CodeIgniter4/tree/v4.2.3) (2022-08-06)
+[Full Changelog](https://github.com/codeigniter4/CodeIgniter4/compare/v4.2.2...v4.2.3)
+
+* SECURITY: Improve CSRF protection (for Shield CSRF security fix)
+
 ## [v4.2.2](https://github.com/codeigniter4/CodeIgniter4/tree/v4.2.2) (2022-08-05)
 [Full Changelog](https://github.com/codeigniter4/CodeIgniter4/compare/v4.2.1...v4.2.2)
 
diff --git a/admin/RELEASE.md b/admin/RELEASE.md
index 47e553e6d2e0..3448c3e72926 100644
--- a/admin/RELEASE.md
+++ b/admin/RELEASE.md
@@ -2,7 +2,7 @@
 
 > Documentation guide based on the releases of `4.0.5` and `4.1.0` on January 31, 2021.
 >
-> Updated for `4.1.6` on December 24, 2021.
+> Updated for `4.2.3` on August 6, 2022.
 >
 > -MGatner
 
@@ -29,8 +29,9 @@ git clone git@github.com:codeigniter4/CodeIgniter4.git
 git clone git@github.com:codeigniter4/userguide.git
 ```
 * Vet the **admin/** folders for any removed hidden files (Action deploy scripts *do not remove these*)
+* Merge any Security Advisory PRs in private forks
 
-## CodeIgniter4
+## Process
 
 > Note: Most changes that need noting in the User Guide and docs should have been included
 > with their PR, so this process assumes you will not be generating much new content.
@@ -75,6 +76,7 @@ composer create-project codeigniter4/appstarter release-test
 cd release-test
 composer test && composer info codeigniter4/framework
 ```
+* publish any Security Advisories that were resolved from private forks
 
 ## User Guide
 
diff --git a/system/CodeIgniter.php b/system/CodeIgniter.php
index 7dbfbc8e5705..285576f4352a 100644
--- a/system/CodeIgniter.php
+++ b/system/CodeIgniter.php
@@ -47,7 +47,7 @@ class CodeIgniter
     /**
      * The current version of CodeIgniter Framework
      */
-    public const CI_VERSION = '4.2.2';
+    public const CI_VERSION = '4.2.3';
 
     /**
      * App startup time.
diff --git a/user_guide_src/source/changelogs/index.rst b/user_guide_src/source/changelogs/index.rst
index cae666d86e56..bcb0792d2ed4 100644
--- a/user_guide_src/source/changelogs/index.rst
+++ b/user_guide_src/source/changelogs/index.rst
@@ -12,6 +12,7 @@ See all the changes.
 .. toctree::
     :titlesonly:
 
+    v4.2.4
     v4.2.3
     v4.2.2
     v4.2.1
diff --git a/user_guide_src/source/changelogs/v4.2.3.rst b/user_guide_src/source/changelogs/v4.2.3.rst
index 83fd15df2924..cfa036fd69b8 100644
--- a/user_guide_src/source/changelogs/v4.2.3.rst
+++ b/user_guide_src/source/changelogs/v4.2.3.rst
@@ -1,7 +1,7 @@
 Version 4.2.3
 #############
 
-Release Date: Unreleased
+Release Date: August 6, 2022
 
 **4.2.3 release of CodeIgniter4**
 
diff --git a/user_guide_src/source/changelogs/v4.2.4.rst b/user_guide_src/source/changelogs/v4.2.4.rst
new file mode 100644
index 000000000000..c6ffb56dba7c
--- /dev/null
+++ b/user_guide_src/source/changelogs/v4.2.4.rst
@@ -0,0 +1,35 @@
+Version 4.2.4
+#############
+
+Release Date: Unreleased
+
+**4.2.4 release of CodeIgniter4**
+
+.. contents::
+    :local:
+    :depth: 2
+
+BREAKING
+********
+
+none.
+
+Enhancements
+************
+
+none.
+
+Changes
+*******
+
+none.
+
+Deprecations
+************
+
+none.
+
+Bugs Fixed
+**********
+
+See the repo's `CHANGELOG.md <https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md>`_ for a complete list of bugs fixed.
diff --git a/user_guide_src/source/conf.py b/user_guide_src/source/conf.py
index 35d868a4ff49..6282570cfdb8 100644
--- a/user_guide_src/source/conf.py
+++ b/user_guide_src/source/conf.py
@@ -24,7 +24,7 @@
 version = '4.2'
 
 # The full version, including alpha/beta/rc tags.
-release = '4.2.2'
+release = '4.2.3'
 
 # -- General configuration ---------------------------------------------------
 
diff --git a/user_guide_src/source/installation/upgrade_423.rst b/user_guide_src/source/installation/upgrade_423.rst
new file mode 100644
index 000000000000..68cb3be6f51e
--- /dev/null
+++ b/user_guide_src/source/installation/upgrade_423.rst
@@ -0,0 +1,5 @@
+#############################
+Upgrading from 4.2.2 to 4.2.3
+#############################
+
+Version ``4.2.3`` is an internal change for security measures and requires no intervention in projects.