diff --git a/Dockerfile b/Dockerfile
index a7c5609..29771f7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.12
+FROM alpine:3.21
 MAINTAINER "EEA: IDM2 A-Team" <eea-edw-a-team-alerts@googlegroups.com>
 
 RUN apk add --no-cache --virtual .run-deps su-exec rsync openssh tzdata curl ca-certificates && rm -rf /var/cache/apk/*