diff --git a/samples/Basic/FunctionalStateMachine.Samples/FunctionalStateMachine.Samples.csproj b/samples/Basic/FunctionalStateMachine.Samples/FunctionalStateMachine.Samples.csproj
index 8b9cc93..a73fb3b 100644
--- a/samples/Basic/FunctionalStateMachine.Samples/FunctionalStateMachine.Samples.csproj
+++ b/samples/Basic/FunctionalStateMachine.Samples/FunctionalStateMachine.Samples.csproj
@@ -10,7 +10,7 @@
     <ItemGroup>
         <PackageReference Include="coverlet.collector" Version="6.0.4"/>
         <PackageReference Include="JunitXml.TestLogger" Version="8.0.0"/>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1"/>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1"/>
         <PackageReference Include="xunit" Version="2.9.3"/>
         <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2"/>
     </ItemGroup>
diff --git a/samples/StockPurchaser/StockPurchaserSampleApp.Tests/StockPurchaserSampleApp.Tests.csproj b/samples/StockPurchaser/StockPurchaserSampleApp.Tests/StockPurchaserSampleApp.Tests.csproj
index 1521807..7d12e5d 100644
--- a/samples/StockPurchaser/StockPurchaserSampleApp.Tests/StockPurchaserSampleApp.Tests.csproj
+++ b/samples/StockPurchaser/StockPurchaserSampleApp.Tests/StockPurchaserSampleApp.Tests.csproj
@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="6.0.4" />
     <PackageReference Include="JunitXml.TestLogger" Version="8.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
   </ItemGroup>
diff --git a/samples/VendingMachine/VendingMachineSampleApp.Tests/VendingMachineSampleApp.Tests.csproj b/samples/VendingMachine/VendingMachineSampleApp.Tests/VendingMachineSampleApp.Tests.csproj
index 85829d2..08b0911 100644
--- a/samples/VendingMachine/VendingMachineSampleApp.Tests/VendingMachineSampleApp.Tests.csproj
+++ b/samples/VendingMachine/VendingMachineSampleApp.Tests/VendingMachineSampleApp.Tests.csproj
@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="6.0.4" />
     <PackageReference Include="JunitXml.TestLogger" Version="8.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
   </ItemGroup>
diff --git a/test/FunctionalStateMachine.CommandRunnerTests/FunctionalStateMachine.CommandRunnerTests.csproj b/test/FunctionalStateMachine.CommandRunnerTests/FunctionalStateMachine.CommandRunnerTests.csproj
index e8add80..0663e9a 100644
--- a/test/FunctionalStateMachine.CommandRunnerTests/FunctionalStateMachine.CommandRunnerTests.csproj
+++ b/test/FunctionalStateMachine.CommandRunnerTests/FunctionalStateMachine.CommandRunnerTests.csproj
@@ -11,7 +11,7 @@
         <PackageReference Include="coverlet.collector" Version="6.0.4"/>
         <PackageReference Include="JunitXml.TestLogger" Version="8.0.0"/>
         <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="10.0.7" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1"/>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1"/>
         <PackageReference Include="xunit" Version="2.9.3"/>
         <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2"/>
     </ItemGroup>
diff --git a/test/FunctionalStateMachine.Core.Tests/FunctionalStateMachine.Core.Tests.csproj b/test/FunctionalStateMachine.Core.Tests/FunctionalStateMachine.Core.Tests.csproj
index c042c89..783e580 100644
--- a/test/FunctionalStateMachine.Core.Tests/FunctionalStateMachine.Core.Tests.csproj
+++ b/test/FunctionalStateMachine.Core.Tests/FunctionalStateMachine.Core.Tests.csproj
@@ -10,7 +10,7 @@
     <ItemGroup>
         <PackageReference Include="coverlet.collector" Version="6.0.4"/>
         <PackageReference Include="JunitXml.TestLogger" Version="8.0.0"/>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1"/>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1"/>
         <PackageReference Include="xunit" Version="2.9.3"/>
         <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2"/>
     </ItemGroup>
diff --git a/test/FunctionalStateMachine.Diagrams.Tests/FunctionalStateMachine.Diagrams.Tests.csproj b/test/FunctionalStateMachine.Diagrams.Tests/FunctionalStateMachine.Diagrams.Tests.csproj
index f93ca38..065354c 100644
--- a/test/FunctionalStateMachine.Diagrams.Tests/FunctionalStateMachine.Diagrams.Tests.csproj
+++ b/test/FunctionalStateMachine.Diagrams.Tests/FunctionalStateMachine.Diagrams.Tests.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1"/>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1"/>
     <PackageReference Include="JunitXml.TestLogger" Version="8.0.0"/>
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.14.0"/>
     <PackageReference Include="xunit" Version="2.9.3"/>