diff --git a/Dockerfile b/Dockerfile
index fd57a77..19a6d83 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-#syntax=docker/dockerfile:1.8
+#syntax=docker/dockerfile:1.9
 
 FROM --platform=$BUILDPLATFORM golang:1.22.5-alpine AS builder
 WORKDIR /app