diff --git a/Dockerfile b/Dockerfile
index 07c69b92..8ecb5a04 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.20 as certs
+FROM alpine:3.20 AS certs
 RUN apk --update add ca-certificates
 
 FROM scratch