diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0014732..a1ee88d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: ["ubuntu-latest", "windows-latest"]
-        dotnet: ["8.0.x"]
+        dotnet: ["9.0.x"]
     steps:
       - uses: actions/checkout@v4
       - name: Setup .NET ${{ matrix.dotnet }}
diff --git a/App/Directory.Packages.props b/App/Directory.Packages.props
index 06980b3..64b747a 100644
--- a/App/Directory.Packages.props
+++ b/App/Directory.Packages.props
@@ -5,7 +5,7 @@
   <ItemGroup>
     <PackageVersion Include="Asp.Versioning.Http" Version="8.1.0" />
     <PackageVersion Include="Asp.Versioning.Mvc.ApiExplorer" Version="8.1.0" />
-    <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="8.0.11" />
+    <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="9.0.0" />
     <PackageVersion Include="Serilog" Version="4.1.0" />
     <PackageVersion Include="Serilog.Extensions.Hosting" Version="8.0.0" />
     <PackageVersion Include="Serilog.Sinks.Console" Version="6.0.0" />
diff --git a/Directory.Build.props b/Directory.Build.props
index bb61669..fc5a804 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <Nullable>enable</Nullable>
     <LangVersion>latest</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
diff --git a/Dockerfile b/Dockerfile
index 0698029..4279e59 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0-alpine AS build
 
 WORKDIR /app
 
@@ -9,7 +9,7 @@ RUN dotnet restore ./Api/Api.csproj
 
 RUN dotnet publish ./Api/Api.csproj -c Release -o /app/publish
 
-FROM mcr.microsoft.com/dotnet/aspnet:8.0-alpine
+FROM mcr.microsoft.com/dotnet/aspnet:9.0-alpine
 
 COPY --from=build /app/publish .
 
diff --git a/README.md b/README.md
index cc11a9b..9d34c3c 100644
--- a/README.md
+++ b/README.md
@@ -20,5 +20,6 @@ Endpoints:
 - /buyandsell
 
 Tools used:
-- .NET SDK
+
+- .NET 9 SDK
 - Docker
diff --git a/Tests/Directory.Packages.props b/Tests/Directory.Packages.props
index 4767c96..06b16b6 100644
--- a/Tests/Directory.Packages.props
+++ b/Tests/Directory.Packages.props
@@ -4,7 +4,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="FluentAssertions" Version="6.12.2" />
-    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.11" />
+    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="9.0.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageVersion Include="NSubstitute" Version="5.3.0" />
     <PackageVersion Include="xunit" Version="2.9.2" />