diff --git a/Dockerfile b/Dockerfile
index 74b2723..7210b0d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,7 +18,7 @@ ARG DEBIAN_VERSION=bullseye-20241111-slim
 ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
 ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"
 
-FROM ${BUILDER_IMAGE} as builder
+FROM ${BUILDER_IMAGE} AS builder
 
 # install build dependencies
 RUN apt-get update -y && apt-get install -y build-essential git \