diff --git a/alpine.dockerfile b/alpine.dockerfile
index 2892b97..1f0d5c1 100644
--- a/alpine.dockerfile
+++ b/alpine.dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.20@sha256:1e42bbe2508154c9126d48c2b8a75420c3544343bf86fd041fb7527e017a4b4a as builder
+FROM alpine:3.21@sha256:56fa17d2a7e7f168a043a2712e63aed1f8543aeafdcee47c58dcffe38ed51099 as builder
 ARG VERSION
 
 RUN apk --no-cache add \
@@ -26,7 +26,7 @@ RUN ./configure \
 RUN make
 RUN make install DESTDIR=/build/output
 
-FROM alpine:3.20@sha256:1e42bbe2508154c9126d48c2b8a75420c3544343bf86fd041fb7527e017a4b4a
+FROM alpine:3.21@sha256:56fa17d2a7e7f168a043a2712e63aed1f8543aeafdcee47c58dcffe38ed51099
 
 RUN apk --no-cache add \
     libcurl \