diff --git a/Dockerfile b/Dockerfile
index 9013126..b8c18df 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.6
+# syntax=docker/dockerfile:1.7
 # ^ needed for ADD --checksum=…
 
 FROM node:20-bookworm-slim