diff --git a/Containerfile b/Containerfile
index 472683d0..5b18f0c7 100644
--- a/Containerfile
+++ b/Containerfile
@@ -1,3 +1,4 @@
+#syntax=docker/dockerfile:1.7-labs
 ARG TAG=latest
 
 FROM cfaprdbatchcr.azurecr.io/pyrenew-hew-dependencies:${TAG}