diff --git a/Dockerfile b/Dockerfile
index 2ceba8c..627e458 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:8.0-alpine as buildnode
+FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:9.0-alpine as buildnode
 
 ARG TARGETPLATFORM
 ARG VERSION