diff --git a/Dockerfile b/Dockerfile
index 6ed6f1d..f26ed4e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,7 @@ WORKDIR /src
 COPY ./*.sh ./
 RUN shellcheck -e SC1091,SC1090 ./*.sh
 
-FROM mcr.microsoft.com/dotnet/sdk:8.0 AS restore
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS restore
 WORKDIR /src
 COPY ./*.sln ./
 COPY */*.csproj ./
@@ -29,7 +29,7 @@ RUN dotnet test
 FROM build AS publish
 RUN dotnet publish "./doppler-beplic/doppler-beplic.csproj" -c Release -o /app/publish
 
-FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS final
+FROM mcr.microsoft.com/dotnet/aspnet:9.0 AS final
 WORKDIR /app
 EXPOSE 80
 COPY --from=publish /app/publish .
diff --git a/doppler-beplic/Dockerfile b/doppler-beplic/Dockerfile
index 1f4754b..cf3fb78 100644
--- a/doppler-beplic/Dockerfile
+++ b/doppler-beplic/Dockerfile
@@ -1,11 +1,11 @@
 #See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging.
 
-FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
+FROM mcr.microsoft.com/dotnet/aspnet:9.0 AS base
 WORKDIR /app
 EXPOSE 80
 EXPOSE 443
 
-FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
 WORKDIR /src
 COPY ["doppler-beplic/doppler-beplic.csproj", "doppler-beplic/"]
 RUN dotnet restore "doppler-beplic/doppler-beplic.csproj"