diff --git a/Dockerfile b/Dockerfile
index 30e5991..101c44a 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:1.27 AS prep
diff --git a/Dockerfile.goreleaser b/Dockerfile.goreleaser
index 4f90f13..0ed579f 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