diff --git a/.goreleaser.Dockerfile b/.goreleaser.Dockerfile
index 16bad34..bea4652 100644
--- a/.goreleaser.Dockerfile
+++ b/.goreleaser.Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1
+# syntax=docker/dockerfile:1@sha256:865e5dd094beca432e8c0a1d5e1c465db5f998dca4e439981029b3b81fb39ed5
 
 ## Setup stage
 FROM alpine:3.20.2@sha256:0a4eaa0eecf5f8c050e5bba433f58c052be7587ee8af3e8b3910ef9ab5fbe9f5 as builder
diff --git a/Dockerfile b/Dockerfile
index f9fd858..8b02834 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1
+# syntax=docker/dockerfile:1@sha256:865e5dd094beca432e8c0a1d5e1c465db5f998dca4e439981029b3b81fb39ed5
 
 ## Build stage
 FROM golang:1.22.6-alpine@sha256:1a478681b671001b7f029f94b5016aed984a23ad99c707f6a0ab6563860ae2f3 as build