diff --git a/docker/Dockerfile.linux.386 b/docker/Dockerfile.linux.386
index 7c3b9a6..7ae4252 100644
--- a/docker/Dockerfile.linux.386
+++ b/docker/Dockerfile.linux.386
@@ -1,4 +1,4 @@
-FROM i386/alpine:3.21@sha256:7b0f18085272db228a5b32fd67f4de1e9690bfae60990971bdb0a324347e2401 AS build
+FROM i386/alpine:3.21@sha256:fb70fd49b7da8155e6502719154eb96ef6fede4947a33dcd5497c4e7124fd707 AS build
 RUN apk add --no-cache ca-certificates mailcap
 
 FROM scratch
diff --git a/docker/Dockerfile.linux.amd64 b/docker/Dockerfile.linux.amd64
index 1c8be56..c942cd2 100644
--- a/docker/Dockerfile.linux.amd64
+++ b/docker/Dockerfile.linux.amd64
@@ -1,4 +1,4 @@
-FROM amd64/alpine:3.21@sha256:9a64a732c12ebe63a5b85832ea1b032bd7c4fde32ff89af7897d3e3fc334f33e AS build
+FROM amd64/alpine:3.21@sha256:0fcdd3eb862c094cd75cf76bd7acd105e2927f69565a595899d76bc33512e37f AS build
 RUN apk add --no-cache ca-certificates mailcap
 
 FROM scratch
diff --git a/docker/Dockerfile.linux.arm64 b/docker/Dockerfile.linux.arm64
index d71f8ec..467ac9c 100644
--- a/docker/Dockerfile.linux.arm64
+++ b/docker/Dockerfile.linux.arm64
@@ -1,4 +1,4 @@
-FROM arm64v8/alpine:3.21@sha256:cbcd3d242c2e582539d1fa51cf1fa550387be5baec96b0799c0010f96ec1f354 AS build
+FROM arm64v8/alpine:3.21@sha256:1a3d9599c6473f7a48fa21d7e1651960021a9affd2ae26c36541f85d65189e1f AS build
 RUN apk add --no-cache ca-certificates mailcap
 
 FROM scratch