diff --git a/Containerfile.multiarch b/Containerfile.multiarch
index 8468753..b0503f5 100644
--- a/Containerfile.multiarch
+++ b/Containerfile.multiarch
@@ -8,7 +8,7 @@ WORKDIR /src
 
 RUN make build
 
-FROM docker.io/library/alpine:3.20@sha256:1e42bbe2508154c9126d48c2b8a75420c3544343bf86fd041fb7527e017a4b4a
+FROM docker.io/library/alpine:3.21@sha256:21dc6063fd678b478f57c0e13f47560d0ea4eeba26dfc947b2a4f81f686b9f45
 
 LABEL maintainer="Robert Kaussow <mail@thegeeklab.de>"
 LABEL org.opencontainers.image.authors="Robert Kaussow <mail@thegeeklab.de>"