diff --git a/Dockerfile b/Dockerfile
index e5f21d3..6f986eb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.27
+# syntax=docker/dockerfile:1.28
 
 # Build the manager binary.
 FROM golang:1.26 AS prep
diff --git a/Dockerfile.goreleaser b/Dockerfile.goreleaser
index e8de9db..bd3fd0b 100644
--- a/Dockerfile.goreleaser
+++ b/Dockerfile.goreleaser
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.27
+# syntax=docker/dockerfile:1.28
 
 FROM --platform=$BUILDPLATFORM alpine:3.24 AS prep