diff --git a/Dockerfile b/Dockerfile
index 0a8bd65..9ad98ef 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,19 +1,19 @@
-FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
 WORKDIR /src
 
-# Copy solution + project files first (for restore)
+# Copy solution + project files first
 COPY CronApp.sln ./
 COPY Scheduler/Scheduler.csproj Scheduler/
 
 RUN dotnet restore CronApp.sln
 
-# Copy rest of the source
+# Copy the rest of the code
 COPY . .
 
 # Publish from the project folder
 RUN dotnet publish Scheduler/Scheduler.csproj -c Release -o /app
 
-FROM mcr.microsoft.com/dotnet/runtime:8.0
+FROM mcr.microsoft.com/dotnet/runtime:9.0
 WORKDIR /app
 COPY --from=build /app .
 ENTRYPOINT ["dotnet", "Scheduler.dll"]