diff --git a/docker/Dockerfile b/docker/Dockerfile
index 12be030..6e15151 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.20.3
+FROM alpine:3.21.3
 
 RUN apk add --no-cache gettext curl nginx php83 php83-fpm php83-opcache php83-pdo php83-pdo_sqlite php83-openssl && \
     mkdir /var/www/html