diff --git a/Dockerfile b/Dockerfile
index 20abc5c1..4c8631e7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,11 @@
 # First stage obtains the list of certificates.
-FROM --platform=$BUILDPLATFORM alpine:3.21.0@sha256:21dc6063fd678b478f57c0e13f47560d0ea4eeba26dfc947b2a4f81f686b9f45 AS build
+FROM --platform=$BUILDPLATFORM alpine:3.21.2@sha256:56fa17d2a7e7f168a043a2712e63aed1f8543aeafdcee47c58dcffe38ed51099 AS build
 RUN apk --no-cache add ca-certificates-bundle
 
 # Second stage copies the binaries, configuration and also the
 # certificates from the first stage.
 
-FROM alpine:3.21.0@sha256:21dc6063fd678b478f57c0e13f47560d0ea4eeba26dfc947b2a4f81f686b9f45 AS release
+FROM alpine:3.21.2@sha256:56fa17d2a7e7f168a043a2712e63aed1f8543aeafdcee47c58dcffe38ed51099 AS release
 ARG TARGETOS
 ARG TARGETARCH
 ARG HOST_DIST=$TARGETOS-$TARGETARCH
diff --git a/Dockerfile.build b/Dockerfile.build
index 20abc5c1..4c8631e7 100644
--- a/Dockerfile.build
+++ b/Dockerfile.build
@@ -1,11 +1,11 @@
 # First stage obtains the list of certificates.
-FROM --platform=$BUILDPLATFORM alpine:3.21.0@sha256:21dc6063fd678b478f57c0e13f47560d0ea4eeba26dfc947b2a4f81f686b9f45 AS build
+FROM --platform=$BUILDPLATFORM alpine:3.21.2@sha256:56fa17d2a7e7f168a043a2712e63aed1f8543aeafdcee47c58dcffe38ed51099 AS build
 RUN apk --no-cache add ca-certificates-bundle
 
 # Second stage copies the binaries, configuration and also the
 # certificates from the first stage.
 
-FROM alpine:3.21.0@sha256:21dc6063fd678b478f57c0e13f47560d0ea4eeba26dfc947b2a4f81f686b9f45 AS release
+FROM alpine:3.21.2@sha256:56fa17d2a7e7f168a043a2712e63aed1f8543aeafdcee47c58dcffe38ed51099 AS release
 ARG TARGETOS
 ARG TARGETARCH
 ARG HOST_DIST=$TARGETOS-$TARGETARCH