diff --git a/docker/Dockerfile.linux.386 b/docker/Dockerfile.linux.386
index df6be68..05ccaa4 100644
--- a/docker/Dockerfile.linux.386
+++ b/docker/Dockerfile.linux.386
@@ -1,4 +1,4 @@
-FROM i386/alpine:3.21@sha256:fb70fd49b7da8155e6502719154eb96ef6fede4947a33dcd5497c4e7124fd707 AS build
+FROM i386/alpine:3.21@sha256:483a843f6d421ef80be40d739461a762bfa12d5f2327151835326d4e7f6ae189 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 8fe53ad..2dae0ee 100644
--- a/docker/Dockerfile.linux.amd64
+++ b/docker/Dockerfile.linux.amd64
@@ -1,4 +1,4 @@
-FROM amd64/alpine:3.21@sha256:0fcdd3eb862c094cd75cf76bd7acd105e2927f69565a595899d76bc33512e37f AS build
+FROM amd64/alpine:3.21@sha256:b7adcabf8c8320af2f49b10a8ba9336f2a286d7d3f647533c638732c73e00f20 AS build
 RUN apk add --no-cache ca-certificates mailcap
 
 FROM scratch
diff --git a/docker/Dockerfile.linux.arm b/docker/Dockerfile.linux.arm
index bfa2ee6..1d17bee 100644
--- a/docker/Dockerfile.linux.arm
+++ b/docker/Dockerfile.linux.arm
@@ -1,4 +1,4 @@
-FROM arm32v6/alpine:3.21@sha256:3ec4e00c3672159e05732bcef6c97beb6ceaad9e87a76df277563cadeb95b37d AS build
+FROM arm32v6/alpine:3.21@sha256:2c2afdf9c980373d45dd1ae735da4a649b6e01dccd126d4028ed68ae9c5ffdbe 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 c6de62c..26f9db3 100644
--- a/docker/Dockerfile.linux.arm64
+++ b/docker/Dockerfile.linux.arm64
@@ -1,4 +1,4 @@
-FROM arm64v8/alpine:3.21@sha256:1a3d9599c6473f7a48fa21d7e1651960021a9affd2ae26c36541f85d65189e1f AS build
+FROM arm64v8/alpine:3.21@sha256:027789c1e8530f46d8211da2debc3f927eab8387ee2bb3922e466005d53cb0fe AS build
 RUN apk add --no-cache ca-certificates mailcap
 
 FROM scratch