diff --git a/Dockerfile b/Dockerfile
index 3bb7322..48bd648 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,15 +9,13 @@ run --mount=type=cache,id=novit-rs,target=/usr/local/cargo/registry \
     RUSTFLAGS="-C target-feature=-crt-static" cargo install --path . --root /dist
 
 # ------------------------------------------------------------------------
-from alpine:3.22.2 as initrd
+from alpine:3.23.2 as initrd
 run apk add zstd lz4
 
 workdir /system
 
-env VERSION=3.23.2
-
 run . /etc/os-release \
- && wget -O- https://dl-cdn.alpinelinux.org/alpine/v${VERSION%.*}/releases/x86_64/alpine-minirootfs-${VERSION}-x86_64.tar.gz |tar zxv
+ && wget -O- https://dl-cdn.alpinelinux.org/alpine/v${VERSION_ID%.*}/releases/x86_64/alpine-minirootfs-${VERSION_ID}-x86_64.tar.gz |tar zxv
 
 run apk add --no-cache --update -p . musl libgcc coreutils \
  iproute2 lvm2 lvm2-extra lvm2-dmeventd udev cryptsetup \
@@ -36,6 +34,6 @@ run chroot . init-version
 run find * |cpio -H newc -oF /initrd
 
 # ------------------------------------------------------------------------
-from alpine:3.23.0
+from alpine:3.23.2
 copy --from=initrd /initrd /
 entrypoint ["base64","/initrd"]