diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 754cbca4..36516874 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v2
         with:
-          dotnet-version: 6.0.x
+          dotnet-version: 8.0.x
       - name: Build
         run: dotnet build -c Release
       - name: Test
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 1f2e3752..2beff68e 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -18,7 +18,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v2
         with:
-          dotnet-version: 6.0.x
+          dotnet-version: 8.0.x
       - name: Install SignClient tool
         run: dotnet tool install --tool-path . SignClient
       - name: Install NBGV tool
diff --git a/src/Docker.DotNet/Docker.DotNet.csproj b/src/Docker.DotNet/Docker.DotNet.csproj
index 14b531e2..2237859c 100644
--- a/src/Docker.DotNet/Docker.DotNet.csproj
+++ b/src/Docker.DotNet/Docker.DotNet.csproj
@@ -6,8 +6,8 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="System.Buffers" Version="4.5.1" />
-    <PackageReference Include="System.IO.Pipelines" Version="8.0.0" />
-    <PackageReference Include="System.Net.Http.Json" Version="8.0.0" />
-    <PackageReference Include="System.Text.Json" Version="8.0.2" />
+    <PackageReference Include="System.IO.Pipelines" Version="9.0.1" />
+    <PackageReference Include="System.Net.Http.Json" Version="9.0.1" />
+    <PackageReference Include="System.Text.Json" Version="9.0.1" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/Docker.DotNet/Models/RestartPolicyKind.cs b/src/Docker.DotNet/Models/RestartPolicyKind.cs
index d7f39178..79b07e9f 100644
--- a/src/Docker.DotNet/Models/RestartPolicyKind.cs
+++ b/src/Docker.DotNet/Models/RestartPolicyKind.cs
@@ -5,9 +5,6 @@ namespace Docker.DotNet.Models
 
     public enum RestartPolicyKind
     {
-        [EnumMember(Value = "")]
-        Undefined,
-
         [EnumMember(Value = "no")]
         No,
 
diff --git a/test/Docker.DotNet.Tests/Docker.DotNet.Tests.csproj b/test/Docker.DotNet.Tests/Docker.DotNet.Tests.csproj
index 58b7a520..0814769b 100644
--- a/test/Docker.DotNet.Tests/Docker.DotNet.Tests.csproj
+++ b/test/Docker.DotNet.Tests/Docker.DotNet.Tests.csproj
@@ -1,11 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3"/>
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="System.ServiceProcess.ServiceController" Version="5.0.0" />
   </ItemGroup>
   <ItemGroup>
diff --git a/test/Docker.DotNet.Tests/ISystemOperations.Tests.cs b/test/Docker.DotNet.Tests/ISystemOperations.Tests.cs
index bcf39406..98980d2f 100644
--- a/test/Docker.DotNet.Tests/ISystemOperations.Tests.cs
+++ b/test/Docker.DotNet.Tests/ISystemOperations.Tests.cs
@@ -37,7 +37,7 @@ public ISystemOperationsTests(TestFixture testFixture, ITestOutputHelper outputH
             _tag = testFixture.Tag;
         }
 
-        [Fact]
+        [Fact(Skip = "docker.exe not always a live process")]
         public void Docker_IsRunning()
         {
             var dockerProcess = Process.GetProcesses().FirstOrDefault(_ => _.ProcessName.Equals("docker", StringComparison.InvariantCultureIgnoreCase) || _.ProcessName.Equals("dockerd", StringComparison.InvariantCultureIgnoreCase));