diff --git a/Dockerfile b/Dockerfile
index f2b35f8b..ec3ef452 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.20
+FROM alpine:3.21
 LABEL Maintainer="Tim de Pater <code@trafex.nl>" \
   Description="Lightweight WordPress container with Nginx 1.26 & PHP-FPM 8.3 based on Alpine Linux."