diff --git a/src/libraries/tests.proj b/src/libraries/tests.proj
index eebfd987fcaa9e..69a14c55572d16 100644
--- a/src/libraries/tests.proj
+++ b/src/libraries/tests.proj
@@ -37,6 +37,7 @@
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.IO.MemoryMappedFiles\tests\System.IO.MemoryMappedFiles.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.IO.Packaging\tests\System.IO.Packaging.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq.Expressions\tests\System.Linq.Expressions.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq.Parallel\tests\System.Linq.Parallel.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Memory\tests\System.Memory.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Net.Http\tests\FunctionalTests\System.Net.Http.Functional.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Net.Primitives\tests\FunctionalTests\System.Net.Primitives.Functional.Tests.csproj" />