diff --git a/README.md b/README.md
index f0d4fff..6d3885a 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ The following is just an example of how your Dockerfile could look like.
 ```sh
 # Password for the certificate
 # this image contains the entire .NET SDK and is ideal for creation the build
-FROM mcr.microsoft.com/dotnet/sdk:8.0-alpine-amd64 AS build-env
+FROM mcr.microsoft.com/dotnet/sdk:9.0-alpine-amd64 AS build-env
 WORKDIR /App
 COPY . ./
 # Restore dependencies for your application