diff --git a/CHANGELOG.md b/CHANGELOG.md
index d447406..36b60d6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 All Notable changes to `League\Container` will be documented in this file
 
+## 4.2.3
+
+### Fixed
+- Warnings for PHP 8.4 implicit nullable types (@andypost)
+
 ## 4.2.1
 
 ### Fixed
diff --git a/README.md b/README.md
index 0e39ae7..19104fb 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,11 @@ The following versions of PHP are supported by this version.
 * PHP 7.2
 * PHP 7.3
 * PHP 7.4
+* PHP 8.0
+* PHP 8.1
+* PHP 8.2
+* PHP 8.3
+* PHP 8.4
 
 ## Documentation
 
diff --git a/docs/_data/releases.yml b/docs/_data/releases.yml
index 4a122fe..ed57a58 100644
--- a/docs/_data/releases.yml
+++ b/docs/_data/releases.yml
@@ -22,7 +22,7 @@
   name: League\Container 4.x
   type: Current
   requires: PHP >= 7.2
-  release: 4.2.1 - 2024-03
+  release: 4.2.3 - 2024-10
   support: Ongoing
   url: /4.x/
   menu: