diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 66bca33..f329f50 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,7 +15,7 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v3
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 9.0.x
       - name: Restore dependencies
         run: dotnet restore
       - name: Install dotnet-ef
diff --git a/README.md b/README.md
index 78beb4d..3c24c6c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # ToDo app template API
 
-A template repository for a ToDo app API with .NET8 and PostgreSQL. REPR (FastEndpoints), CQRS (MediatR) and partially Clean Architecture patterns are used.
+A template repository for a ToDo app API with .NET9 and PostgreSQL. REPR (FastEndpoints), CQRS (MediatR) and partially Clean Architecture patterns are used.
 The API is easily extensible and can be used as a starting point for a new project.
 
 Functionality:
@@ -11,7 +11,7 @@ Functionality:
 
 ## Prerequisites
 
-- [.NET 8](https://dotnet.microsoft.com/download/dotnet/8.0)
+- [.NET 9](https://dotnet.microsoft.com/download/dotnet/9.0)
 - [PostgreSQL](https://www.postgresql.org/download/)
 - [Dotnet ef](https://docs.microsoft.com/en-us/ef/core/cli/dotnet)
 - Optional: [Docker](https://docs.docker.com/get-docker/) and [Docker Compose](https://docs.docker.com/compose/install/)
diff --git a/ToDoAppTemplate.Api/Dockerfile b/ToDoAppTemplate.Api/Dockerfile
index 1a72520..8f4e9c5 100644
--- a/ToDoAppTemplate.Api/Dockerfile
+++ b/ToDoAppTemplate.Api/Dockerfile
@@ -1,10 +1,10 @@
-FROM mcr.microsoft.com/dotnet/aspnet:8.0-alpine AS base
+FROM mcr.microsoft.com/dotnet/aspnet:9.0-alpine AS base
 USER $APP_UID
 WORKDIR /app
 EXPOSE 8080
 EXPOSE 8081
 
-FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
 ARG BUILD_CONFIGURATION=Release
 WORKDIR /src
 COPY ["ToDoAppTemplate.Api/ToDoAppTemplate.Api.csproj", "ToDoAppTemplate.Api/"]
diff --git a/ToDoAppTemplate.Api/ToDoAppTemplate.Api.csproj b/ToDoAppTemplate.Api/ToDoAppTemplate.Api.csproj
index 2eebfe7..28cfcbb 100644
--- a/ToDoAppTemplate.Api/ToDoAppTemplate.Api.csproj
+++ b/ToDoAppTemplate.Api/ToDoAppTemplate.Api.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <Nullable>enable</Nullable>
         <ImplicitUsings>enable</ImplicitUsings>
         <InvariantGlobalization>true</InvariantGlobalization>
@@ -16,11 +16,11 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="FastEndpoints" Version="5.21.2" />
-      <PackageReference Include="FastEndpoints.Security" Version="5.21.2" />
-      <PackageReference Include="FastEndpoints.Swagger" Version="5.21.2" />
-      <PackageReference Include="MediatR" Version="12.2.0" />
-      <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.1">
+      <PackageReference Include="FastEndpoints" Version="5.30.0" />
+      <PackageReference Include="FastEndpoints.Security" Version="5.30.0" />
+      <PackageReference Include="FastEndpoints.Swagger" Version="5.30.0" />
+      <PackageReference Include="MediatR" Version="13.0.0" />
+      <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.8">
         <PrivateAssets>all</PrivateAssets>
         <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       </PackageReference>
@@ -33,9 +33,7 @@
       <ProjectReference Include="..\ToDoAppTemplate.Domain\ToDoAppTemplate.Domain.csproj" />
     </ItemGroup>
 
-    <ItemGroup>
-      <ProjectReference Include="..\DZarsky.ToDoAppTemplate.Domain\DZarsky.ToDoAppTemplate.Domain.csproj" />
-    </ItemGroup>
+
 
     <ItemGroup>
       <Content Include="..\.dockerignore">
diff --git a/ToDoAppTemplate.Application/ToDoAppTemplate.Application.csproj b/ToDoAppTemplate.Application/ToDoAppTemplate.Application.csproj
index 0b0da7f..013823d 100644
--- a/ToDoAppTemplate.Application/ToDoAppTemplate.Application.csproj
+++ b/ToDoAppTemplate.Application/ToDoAppTemplate.Application.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
     </PropertyGroup>
@@ -12,9 +12,9 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="MediatR" Version="12.2.0" />
-      <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
-      <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="8.0.0" />
+      <PackageReference Include="MediatR" Version="13.0.0" />
+      <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.8" />
+      <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="9.0.8" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/ToDoAppTemplate.Core/ToDoAppTemplate.Core.csproj b/ToDoAppTemplate.Core/ToDoAppTemplate.Core.csproj
index 8b5ebe7..e9ce69e 100644
--- a/ToDoAppTemplate.Core/ToDoAppTemplate.Core.csproj
+++ b/ToDoAppTemplate.Core/ToDoAppTemplate.Core.csproj
@@ -1,17 +1,17 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Fluid.ViewEngine" Version="2.5.0"/>
+        <PackageReference Include="Fluid.ViewEngine" Version="2.25.0"/>
         <PackageReference Include="Isopoh.Cryptography.Argon2" Version="2.0.0"/>
-        <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="8.0.0"/>
-        <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="8.0.0"/>
-        <PackageReference Include="Microsoft.Extensions.Http" Version="8.0.0"/>
+        <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="9.0.8"/>
+        <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="9.0.8"/>
+        <PackageReference Include="Microsoft.Extensions.Http" Version="9.0.8"/>
     </ItemGroup>
 
     <ItemGroup>
@@ -19,7 +19,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <FrameworkReference Include="Microsoft.AspNetCore.App" Version="8.0.0"/>
+        <FrameworkReference Include="Microsoft.AspNetCore.App" Version="9.0.0"/>
     </ItemGroup>
 
     <ItemGroup>
diff --git a/ToDoAppTemplate.Data/ToDoAppTemplate.Data.csproj b/ToDoAppTemplate.Data/ToDoAppTemplate.Data.csproj
index 571dc44..80ba6b7 100644
--- a/ToDoAppTemplate.Data/ToDoAppTemplate.Data.csproj
+++ b/ToDoAppTemplate.Data/ToDoAppTemplate.Data.csproj
@@ -1,15 +1,15 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="EFCore.NamingConventions" Version="8.0.2" />
-      <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.0" />
-      <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.0" />
+      <PackageReference Include="EFCore.NamingConventions" Version="9.0.0" />
+      <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.8" />
+      <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/ToDoAppTemplate.Domain/ToDoAppTemplate.Domain.csproj b/ToDoAppTemplate.Domain/ToDoAppTemplate.Domain.csproj
index 3a63532..17b910f 100644
--- a/ToDoAppTemplate.Domain/ToDoAppTemplate.Domain.csproj
+++ b/ToDoAppTemplate.Domain/ToDoAppTemplate.Domain.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
     </PropertyGroup>