diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 74ab06a..360b408 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,18 +25,20 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.2
+        uses: actions/checkout@v4.2.2
         with:
           fetch-depth: 0
       - name: Setup .NET SDK
-        uses: actions/setup-dotnet@v4.0.0
+        uses: actions/setup-dotnet@v4.1.0
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: |
+            9.0.x
+            8.0.x
       - name: Build
         run: dotnet build src --configuration Release
       - name: Upload packages
         if: matrix.name == 'Windows'
-        uses: actions/upload-artifact@v4.3.1
+        uses: actions/upload-artifact@v4.4.3
         with:
           name: NuGet packages
           path: nugets/
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b1350d7..f708c4f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,13 +14,13 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.2
+        uses: actions/checkout@v4.2.2
         with:
           fetch-depth: 0
       - name: Setup .NET SDK
-        uses: actions/setup-dotnet@v4.0.0
+        uses: actions/setup-dotnet@v4.1.0
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 9.0.x
       - name: Build
         run: dotnet build src --configuration Release
       - name: Sign NuGet packages
@@ -31,7 +31,7 @@ jobs:
           client-secret: ${{ secrets.AZURE_KEY_VAULT_CLIENT_SECRET }}
           certificate-name: ${{ secrets.AZURE_KEY_VAULT_CERTIFICATE_NAME }}
       - name: Publish artifacts
-        uses: actions/upload-artifact@v4.3.1
+        uses: actions/upload-artifact@v4.4.3
         with:
           name: nugets
           path: nugets/*
diff --git a/global.json b/global.json
index 2134ed9..d5bf446 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "8.0.400",
+    "version": "9.0.100",
     "rollForward": "latestFeature"
   }
 }
\ No newline at end of file
diff --git a/src/NServiceBus.Metrics.AcceptanceTests/NServiceBus.Metrics.AcceptanceTests.csproj b/src/NServiceBus.Metrics.AcceptanceTests/NServiceBus.Metrics.AcceptanceTests.csproj
index 821d89b..a724cf2 100644
--- a/src/NServiceBus.Metrics.AcceptanceTests/NServiceBus.Metrics.AcceptanceTests.csproj
+++ b/src/NServiceBus.Metrics.AcceptanceTests/NServiceBus.Metrics.AcceptanceTests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>..\NServiceBusTests.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
diff --git a/src/NServiceBus.Metrics.Tests/NServiceBus.Metrics.Tests.csproj b/src/NServiceBus.Metrics.Tests/NServiceBus.Metrics.Tests.csproj
index 3d86ba5..a429222 100644
--- a/src/NServiceBus.Metrics.Tests/NServiceBus.Metrics.Tests.csproj
+++ b/src/NServiceBus.Metrics.Tests/NServiceBus.Metrics.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>..\NServiceBusTests.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>