diff --git a/images/prowlarr/Dockerfile b/images/prowlarr/Dockerfile
index 82a4bc9..f75dabc 100644
--- a/images/prowlarr/Dockerfile
+++ b/images/prowlarr/Dockerfile
@@ -1,5 +1,5 @@
 ARG GOLANG_VERSION
-FROM golang:$GOLANG_VERSION as builder
+FROM golang:$GOLANG_VERSION AS builder
 
 ARG TARGETARCH
 ARG VERSION
diff --git a/images/qbittorrent/Dockerfile b/images/qbittorrent/Dockerfile
index b5bed2e..e3970dd 100644
--- a/images/qbittorrent/Dockerfile
+++ b/images/qbittorrent/Dockerfile
@@ -1,5 +1,5 @@
 ARG GOLANG_VERSION
-FROM golang:$GOLANG_VERSION as builder
+FROM golang:$GOLANG_VERSION AS builder
 
 ARG TARGETARCH
 ARG RELEASE
diff --git a/images/radarr/Dockerfile b/images/radarr/Dockerfile
index e3934cb..a0130ae 100644
--- a/images/radarr/Dockerfile
+++ b/images/radarr/Dockerfile
@@ -1,5 +1,5 @@
 ARG GOLANG_VERSION
-FROM golang:$GOLANG_VERSION as builder
+FROM golang:$GOLANG_VERSION AS builder
 
 ARG TARGETARCH
 ARG VERSION
diff --git a/images/sonarr/Dockerfile b/images/sonarr/Dockerfile
index 250d0f3..192f51a 100644
--- a/images/sonarr/Dockerfile
+++ b/images/sonarr/Dockerfile
@@ -1,5 +1,5 @@
 ARG GOLANG_VERSION
-FROM golang:$GOLANG_VERSION as builder
+FROM golang:$GOLANG_VERSION AS builder
 
 ARG TARGETARCH
 ARG VERSION