diff --git a/image/Dockerfile b/image/Dockerfile
index 86607f3..688ea61 100644
--- a/image/Dockerfile
+++ b/image/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.2
+# syntax=docker/dockerfile:1.4
 ARG ARCH
 ARG NAME
 FROM $NAME-base:current-$ARCH