diff --git a/.devcontainer/Ubuntu22.04/Dockerfile b/.devcontainer/Ubuntu22.04/Dockerfile
index b52d8ecd..0ccfd4cb 100644
--- a/.devcontainer/Ubuntu22.04/Dockerfile
+++ b/.devcontainer/Ubuntu22.04/Dockerfile
@@ -4,5 +4,5 @@ RUN apt-get install -y --no-install-recommends wget=2.0.1
 RUN apt-get install -y --no-install-recommends apt-transport-https=2.5.6
 RUN curl -o ./packages-microsoft-prod.deb https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb
 RUN dpkg -i packages-microsoft-prod.deb
-RUN apt-get install -y --no-install-recommends dotnet-sdk-8.0=8.0
+RUN apt-get install -y --no-install-recommends dotnet-sdk-9.0=9.0
 RUN rm -rf /var/lib/apt/lists/*
diff --git a/.github/workflows/dotnetcore.yml b/.github/workflows/dotnetcore.yml
index a082c0e4..534a2ddf 100644
--- a/.github/workflows/dotnetcore.yml
+++ b/.github/workflows/dotnetcore.yml
@@ -21,7 +21,7 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
-            8.x
+            9.x
       - name: Build
         run: dotnet build /WarnAsError
 
@@ -43,11 +43,15 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        framework: ['net6.0','net7.0', 'net8.0']
+        framework: ['net6.0','net7.0', 'net8.0', 'net9.0']
     timeout-minutes: 30
 
     steps:
       - uses: actions/checkout@v4.1.2
+      - name: Setup dotnet 9
+        uses: actions/setup-dotnet@v3.0.3
+        with:
+          dotnet-version: '9.x'
       - name: Setup dotnet 8
         uses: actions/setup-dotnet@v4
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b90e6464..e1cb9fb3 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -33,11 +33,11 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
-            8.x
+            9.x
 
       # The tests should have already been run during the PR workflow, so this is really just a sanity check
       - name: Tests
-        run: dotnet test --framework net8.0
+        run: dotnet test --framework net9.0
 
       # Build and package everything, including the Docker image
       - name: Package release
@@ -66,8 +66,8 @@ jobs:
 
       # Generate the JSON with the docker container as additional smoke test
       - name: Generate JSON SBOM
-        run: docker run --rm -v ${GITHUB_WORKSPACE}:/usr/src/project cyclonedx/cyclonedx-dotnet:${{ steps.package_release.outputs.version }} /usr/src/project/CycloneDX.sln -j -o /usr/src/project 
-        
+        run: docker run --rm -v ${GITHUB_WORKSPACE}:/usr/src/project cyclonedx/cyclonedx-dotnet:${{ steps.package_release.outputs.version }} /usr/src/project/CycloneDX.sln -j -o /usr/src/project
+
       - name: Publish package to NuGet
         env:
           NUGET_API_KEY: ${{ secrets.NUGET_API_KEY }}
diff --git a/.gitpod.yml b/.gitpod.yml
index 2aed0c42..3ad7aad5 100644
--- a/.gitpod.yml
+++ b/.gitpod.yml
@@ -11,9 +11,10 @@ tasks:
       "$DOTNET_ROOT/dotnet-install.sh" --channel 6.0 --install-dir "$DOTNET_ROOT"
       "$DOTNET_ROOT/dotnet-install.sh" --channel 7.0 --install-dir "$DOTNET_ROOT"
       "$DOTNET_ROOT/dotnet-install.sh" --channel 8.0 --install-dir "$DOTNET_ROOT"
+      "$DOTNET_ROOT/dotnet-install.sh" --channel 9.0 --install-dir "$DOTNET_ROOT"
       dotnet tool install --global dotnet-reportgenerator-globaltool
       dotnet restore
 
 vscode:
   extensions:
-    - muhammad-sammy.csharp
\ No newline at end of file
+    - muhammad-sammy.csharp
diff --git a/CycloneDX.Tests/CycloneDX.Tests.csproj b/CycloneDX.Tests/CycloneDX.Tests.csproj
index 802f25da..6bd7738f 100644
--- a/CycloneDX.Tests/CycloneDX.Tests.csproj
+++ b/CycloneDX.Tests/CycloneDX.Tests.csproj
@@ -4,7 +4,7 @@
 
     <IsTestProject>true</IsTestProject>
     <IsPackable>false</IsPackable>
-    <TargetFrameworks>net8.0;net7.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>net9.0;net8.0;net7.0;net6.0</TargetFrameworks>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
diff --git a/CycloneDX/CycloneDX.csproj b/CycloneDX/CycloneDX.csproj
index 1ae39c5b..6b1242ad 100644
--- a/CycloneDX/CycloneDX.csproj
+++ b/CycloneDX/CycloneDX.csproj
@@ -10,7 +10,7 @@
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <ToolCommandName>dotnet-CycloneDX</ToolCommandName>
     <_SkipUpgradeNetAnalyzersNuGetWarning>true</_SkipUpgradeNetAnalyzersNuGetWarning>
-    <TargetFrameworks>net8.0;net7.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>net9.0;net8.0;net7.0;net6.0</TargetFrameworks>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(OsEnvironment )'=='windows'">
diff --git a/Dockerfile b/Dockerfile
index ca7f1cec..21383d1c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/dotnet/sdk:8.0.101
+FROM mcr.microsoft.com/dotnet/sdk:9.0
 
 ARG VERSION
 COPY ./nupkgs /tmp/nupkgs/
diff --git a/README.md b/README.md
index 8e03f2ed..ec95a65f 100755
--- a/README.md
+++ b/README.md
@@ -16,6 +16,7 @@ This module runs on
 *   .NET 6.0
 *   .NET 7.0
 *   .NET 8.0
+*   .NET 9.0
 
 This module no longer runs on
 
diff --git a/semver.txt b/semver.txt
index fcdb2e10..ee74734a 100755
--- a/semver.txt
+++ b/semver.txt
@@ -1 +1 @@
-4.0.0
+4.1.0