diff --git a/Dockerfile b/Dockerfile
index 40c9049..08eed25 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.20@sha256:1e42bbe2508154c9126d48c2b8a75420c3544343bf86fd041fb7527e017a4b4a
+FROM alpine:3.21@sha256:21dc6063fd678b478f57c0e13f47560d0ea4eeba26dfc947b2a4f81f686b9f45
 RUN adduser -k /dev/null -u 10001 -D gorge \
   && chgrp 0 /home/gorge \
   && chmod -R g+rwX /home/gorge