diff --git a/Dockerfile b/Dockerfile
index da01ddd..a89efaa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,5 @@
+# syntax=docker/dockerfile:1
+
 FROM ghcr.io/linuxserver/baseimage-alpine-nginx:3.20
 
 ARG BUILD_DATE
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index c887036..18dc5d0 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,3 +1,5 @@
+# syntax=docker/dockerfile:1
+
 FROM ghcr.io/linuxserver/baseimage-alpine-nginx:arm64v8-3.20
 
 ARG BUILD_DATE