diff --git a/README.md b/README.md
index 28e6f93..6e3033e 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@
 
 ---
 
-Based on Debian `php:8.3-cli-bookworm`.
+Based on Debian `php:8.4-cli-bookworm`.
 
 ## Included