diff --git a/Dockerfile b/Dockerfile
index 3392b8d..20b1bab 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM rust:1.81-bookworm as build
+FROM rust:1.81-bookworm AS build
 
 COPY battlesnake/ /usr/app
 WORKDIR /usr/app