diff --git a/Dockerfile b/Dockerfile
index e885545..0351edf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.4
+# syntax=docker/dockerfile:1.6@sha256:ac85f380a63b13dfcefa89046420e1781752bab202122f8f50032edf31be0021
 
 FROM alpine:3.18.4@sha256:eece025e432126ce23f223450a0326fbebde39cdf496a85d8c016293fc851978 AS build-base