diff --git a/Registry.Dockerfile b/Registry.Dockerfile
index 231db785..b59078fe 100644
--- a/Registry.Dockerfile
+++ b/Registry.Dockerfile
@@ -1,6 +1,6 @@
 ARG PROJECT=ProjectOrigin.Registry
 
-FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:8.0.404 AS build
+FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:9.0.100 AS build
 ARG PROJECT
 
 WORKDIR /builddir