diff --git a/app/Dockerfile b/app/Dockerfile
index 18cba84..d764de0 100644
--- a/app/Dockerfile
+++ b/app/Dockerfile
@@ -1,6 +1,6 @@
 # https://mcr.microsoft.com/product/dotnet/sdk
 # https://mcr.microsoft.com/v2/dotnet/sdk/tags/list
-FROM mcr.microsoft.com/dotnet/sdk:8.0.101-alpine3.18-amd64@sha256:678ef915d8938fab29b30462188271b885ad389ba9f5887b0018b5cf1bebac7a as builder
+FROM mcr.microsoft.com/dotnet/sdk:8.0.203-alpine3.18-amd64@sha256:88b2081be6c081e4f4a5cbf4d3317794ac01be3f15bc9afac4fe88c41d85521d as builder
 RUN apk add clang build-base zlib-dev
 WORKDIR /app
 COPY my-sample-app.csproj .