diff --git a/EssentialCSharp.Web/Dockerfile b/EssentialCSharp.Web/Dockerfile
index 349e8046..284e9bd0 100644
--- a/EssentialCSharp.Web/Dockerfile
+++ b/EssentialCSharp.Web/Dockerfile
@@ -5,7 +5,7 @@ WORKDIR /app
 EXPOSE 8080
 EXPOSE 8081
 
-FROM mcr.microsoft.com/dotnet/sdk:8.0.403 AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0.101 AS build
 RUN sh -c "$(curl -fsSL https://aka.ms/install-artifacts-credprovider.sh)"
 WORKDIR /src
 COPY . .