diff --git a/docker/Dockerfile.linux.amd64 b/docker/Dockerfile.linux.amd64
index 7cca021..c95ac4d 100644
--- a/docker/Dockerfile.linux.amd64
+++ b/docker/Dockerfile.linux.amd64
@@ -1,4 +1,4 @@
-FROM alpine:3.19@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b
+FROM alpine:3.22@sha256:4b7ce07002c69e8f3d704a9c5d6fd3053be500b7f1c69fc0d80990c2ad8dd412
 RUN apk add --no-cache ca-certificates mailcap && \
 	echo "@testing http://nl.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories
 
diff --git a/docker/Dockerfile.linux.multiarch b/docker/Dockerfile.linux.multiarch
index 5f4e901..c3ea3c7 100644
--- a/docker/Dockerfile.linux.multiarch
+++ b/docker/Dockerfile.linux.multiarch
@@ -1,4 +1,4 @@
-FROM alpine:3.19@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b as alpine
+FROM alpine:3.22@sha256:4b7ce07002c69e8f3d704a9c5d6fd3053be500b7f1c69fc0d80990c2ad8dd412 as alpine
 RUN apk add --no-cache ca-certificates mailcap
 
 FROM scratch