diff --git a/tests/ApiPortVS.Tests/packages.config b/tests/ApiPortVS.Tests/packages.config
index 7604d3730..edd1d4c02 100644
--- a/tests/ApiPortVS.Tests/packages.config
+++ b/tests/ApiPortVS.Tests/packages.config
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
+  <package id="Microsoft.TestPlatform.TestHost" version="15.0.0" targetFramework="net46" />
   <package id="Microsoft.VisualStudio.CoreUtility" version="15.0.26201" targetFramework="net46" />
   <package id="Microsoft.VisualStudio.Imaging" version="15.0.26201" targetFramework="net46" />
   <package id="Microsoft.VisualStudio.OLE.Interop" version="7.10.6070" targetFramework="net46" />
diff --git a/tests/Microsoft.Fx.Portability.Cci.Tests/Microsoft.Fx.Portability.Cci.Tests.csproj b/tests/Microsoft.Fx.Portability.Cci.Tests/Microsoft.Fx.Portability.Cci.Tests.csproj
index bf1f25033..2a47e4703 100644
--- a/tests/Microsoft.Fx.Portability.Cci.Tests/Microsoft.Fx.Portability.Cci.Tests.csproj
+++ b/tests/Microsoft.Fx.Portability.Cci.Tests/Microsoft.Fx.Portability.Cci.Tests.csproj
@@ -10,6 +10,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="2.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
+    <PackageReference Include="Microsoft.TestPlatform.TestHost" Version="15.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
     <PackageReference Include="NSubstitute" Version="2.0.2" />
     <PackageReference Include="System.Reflection.Metadata" Version="1.4.2" />
diff --git a/tests/Microsoft.Fx.Portability.MetadataReader.Tests/Microsoft.Fx.Portability.MetadataReader.Tests.csproj b/tests/Microsoft.Fx.Portability.MetadataReader.Tests/Microsoft.Fx.Portability.MetadataReader.Tests.csproj
index 1f85f8e4d..66999802d 100644
--- a/tests/Microsoft.Fx.Portability.MetadataReader.Tests/Microsoft.Fx.Portability.MetadataReader.Tests.csproj
+++ b/tests/Microsoft.Fx.Portability.MetadataReader.Tests/Microsoft.Fx.Portability.MetadataReader.Tests.csproj
@@ -2,7 +2,6 @@
 
   <PropertyGroup>
     <TargetFramework>net46</TargetFramework>
-
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <GenerateBindingRedirectsOutputType>true</GenerateBindingRedirectsOutputType>
   </PropertyGroup>
@@ -10,6 +9,7 @@
   <ItemGroup>
     <PackageReference Include="MicroBuild.Core" Version="0.2.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="2.0.0" />
+    <PackageReference Include="Microsoft.TestPlatform.TestHost" Version="15.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
     <PackageReference Include="NSubstitute" Version="2.0.2" />
     <PackageReference Include="System.Collections.Immutable" Version="1.3.1" />
diff --git a/tests/Microsoft.Fx.Portability.Offline.Tests/Microsoft.Fx.Portability.Offline.Tests.csproj b/tests/Microsoft.Fx.Portability.Offline.Tests/Microsoft.Fx.Portability.Offline.Tests.csproj
index 99f114e2e..9ebe9a249 100644
--- a/tests/Microsoft.Fx.Portability.Offline.Tests/Microsoft.Fx.Portability.Offline.Tests.csproj
+++ b/tests/Microsoft.Fx.Portability.Offline.Tests/Microsoft.Fx.Portability.Offline.Tests.csproj
@@ -5,6 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.TestPlatform.TestHost" Version="15.0.0" />
     <PackageReference Include="NSubstitute" Version="2.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
     <PackageReference Include="xunit" Version="2.2.0" />
diff --git a/tests/Microsoft.Fx.Portability.Tests/Microsoft.Fx.Portability.Tests.csproj b/tests/Microsoft.Fx.Portability.Tests/Microsoft.Fx.Portability.Tests.csproj
index a000a5ccc..2627724a7 100644
--- a/tests/Microsoft.Fx.Portability.Tests/Microsoft.Fx.Portability.Tests.csproj
+++ b/tests/Microsoft.Fx.Portability.Tests/Microsoft.Fx.Portability.Tests.csproj
@@ -6,6 +6,7 @@
 
   <ItemGroup>
     <PackageReference Include="MicroBuild.Core" Version="0.2.0" />
+    <PackageReference Include="Microsoft.TestPlatform.TestHost" Version="15.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
     <PackageReference Include="NSubstitute" Version="2.0.2" />
     <PackageReference Include="System.Diagnostics.FileVersionInfo " Version="4.3.0" />