diff --git a/docker/Dockerfile b/docker/Dockerfile
index 3a3efa53..a069200f 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.4
+# syntax=docker/dockerfile:1.6
 FROM ubuntu:22.04 as init
 
 COPY --link / /work/