diff --git a/docker/Dockerfile.linux.amd64 b/docker/Dockerfile.linux.amd64
index 7cca021..bf5e0e0 100644
--- a/docker/Dockerfile.linux.amd64
+++ b/docker/Dockerfile.linux.amd64
@@ -1,4 +1,4 @@
-FROM alpine:3.19@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b
+FROM alpine:3.20@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd
 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..fcb0281 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:3.20@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd as alpine
 RUN apk add --no-cache ca-certificates mailcap
 
 FROM scratch