diff --git a/Dockerfile b/Dockerfile
index ee02fad..1d887f8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.20@sha256:26147acbda4f14c5add9946e2fd2ed543fc402884fd75146bd342a7f6271dc1d
+# syntax=docker/dockerfile:1.21@sha256:27f9262d43452075f3c410287a2c43f5ef1bf7ec2bb06e8c9eeb1b8d453087bc
 
 FROM alpine:3.23.2@sha256:865b95f46d98cf867a156fe4a135ad3fe50d2056aa3f25ed31662dff6da4eb62 AS build-base