diff --git a/php8.4/Dockerfile b/php8.4/Dockerfile
index 20e7bf1..e0fb902 100644
--- a/php8.4/Dockerfile
+++ b/php8.4/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.3.20-cli-bookworm@sha256:dda34d35a7224126658697e4d3eb77209753e83d28a2821f5c13a94732100af1
+FROM php:8.3.21-cli-bookworm@sha256:2643907fd60518306cfe9b68ac1e969065e55362b685b16b1c2b333af1e494ef
 
 SHELL [ "/bin/bash", "-exo", "pipefail", "-c" ]