diff --git a/build/Dockerfile b/build/Dockerfile
index 6e47d4d923..fa96a66180 100644
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.18
+# syntax=docker/dockerfile:1.19
 FROM golang:1.25 AS builder
 
 WORKDIR /go/src/github.com/nginx/nginx-gateway-fabric
diff --git a/build/Dockerfile.nginx b/build/Dockerfile.nginx
index 1a9f2e01e1..ef9eddfada 100644
--- a/build/Dockerfile.nginx
+++ b/build/Dockerfile.nginx
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.18
+# syntax=docker/dockerfile:1.19
 FROM scratch AS nginx-files
 
 # the following links can be replaced with local files if needed, i.e. ADD --chown=101:1001 <local_file> <container_file>
diff --git a/build/Dockerfile.nginxplus b/build/Dockerfile.nginxplus
index 4502df53d0..65676a5040 100644
--- a/build/Dockerfile.nginxplus
+++ b/build/Dockerfile.nginxplus
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.18
+# syntax=docker/dockerfile:1.19
 FROM scratch AS nginx-files
 
 # the following links can be replaced with local files if needed, i.e. ADD --chown=101:1001 <local_file> <container_file>
diff --git a/debug/Dockerfile b/debug/Dockerfile
index 49187a8dd5..e360d31306 100644
--- a/debug/Dockerfile
+++ b/debug/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.18
+# syntax=docker/dockerfile:1.19
 # This Dockerfile builds an image with the dlv debugger. See the debugging guide in the developer docs for details
 # on how to use it.
 FROM golang:1.25-alpine AS builder
diff --git a/tests/conformance/Dockerfile b/tests/conformance/Dockerfile
index 1acfb21c4b..70586d6c19 100644
--- a/tests/conformance/Dockerfile
+++ b/tests/conformance/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.18
+# syntax=docker/dockerfile:1.19
 FROM golang:1.25
 
 WORKDIR /go/src/github.com/nginx/nginx-gateway-fabric/tests/conformance
diff --git a/tests/framework/crossplane/Dockerfile b/tests/framework/crossplane/Dockerfile
index 63da0a689c..920169a4bc 100644
--- a/tests/framework/crossplane/Dockerfile
+++ b/tests/framework/crossplane/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.18
+# syntax=docker/dockerfile:1.19
 FROM golang:1.25-alpine AS builder
 
 WORKDIR /