diff --git a/frontend/minattest-app-host/Dockerfile b/frontend/minattest-app-host/Dockerfile
index fe84269..e0a4f94 100644
--- a/frontend/minattest-app-host/Dockerfile
+++ b/frontend/minattest-app-host/Dockerfile
@@ -1,10 +1,10 @@
 # frontend/minattest-app-host/Dockerfile
 
-FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
+FROM mcr.microsoft.com/dotnet/aspnet:9.0 AS base
 WORKDIR /app
 EXPOSE 8080
 
-FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
 WORKDIR /src
 
 COPY . .