diff --git a/README.md b/README.md
index 3cfc9c6..e76cae5 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,7 @@ This library supports the following PHP implementations:
 - PHP 8.1
 - PHP 8.2
 - PHP 8.3
+- PHP 8.4
 
 We currently don't support external PHP Runtimes like:
 
diff --git a/template/README.mustache b/template/README.mustache
index 598f8fe..c7bff53 100644
--- a/template/README.mustache
+++ b/template/README.mustache
@@ -44,6 +44,7 @@ This library supports the following PHP implementations:
 - PHP 8.1
 - PHP 8.2
 - PHP 8.3
+- PHP 8.4
 
 We currently don't support external PHP Runtimes like: