diff --git a/Dockerfile b/Dockerfile
index f1df6b83c..5319ddbf6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.4
+# syntax=docker/dockerfile:1.23
 
 # Copyright 2021 The Kubernetes Authors.
 #