diff --git a/Dockerfile b/Dockerfile
index 353eabc..32ad4a9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1
 
 # build stage
-FROM ghcr.io/linuxserver/baseimage-ubuntu:noble as buildstage
+FROM ghcr.io/linuxserver/baseimage-ubuntu:noble AS buildstage
 
 # set version label
 ARG FFMPEG_VERSION
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 30bb62c..39f89b1 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1
 
 # build stage
-FROM ghcr.io/linuxserver/baseimage-ubuntu:arm64v8-noble as buildstage
+FROM ghcr.io/linuxserver/baseimage-ubuntu:arm64v8-noble AS buildstage
 
 # set version label
 ARG FFMPEG_VERSION