diff --git a/src/flatcollections-array/FlatArray.Tests/FlatArray.Tests.csproj b/src/flatcollections-array/FlatArray.Tests/FlatArray.Tests.csproj
index c32e0a9..9420f0e 100644
--- a/src/flatcollections-array/FlatArray.Tests/FlatArray.Tests.csproj
+++ b/src/flatcollections-array/FlatArray.Tests/FlatArray.Tests.csproj
@@ -8,6 +8,7 @@
     <InvariantGlobalization>true</InvariantGlobalization>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
     <Authors>Andrei Sergeev, Pavel Moskovoy</Authors>
     <Copyright>Copyright © 2022-2024 Andrei Sergeev, Pavel Moskovoy</Copyright>
     <RootNamespace>PrimeFuncPack.Core.Tests</RootNamespace>
@@ -19,7 +20,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="PrimeFuncPack.UnitTest.Data" Version="3.1.0" />
     <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">