diff --git a/src/Configuration.KeyPerFile/test/Microsoft.Extensions.Configuration.KeyPerFile.Tests.csproj b/src/Configuration.KeyPerFile/test/Microsoft.Extensions.Configuration.KeyPerFile.Tests.csproj
index aee7e7a7bf..95a73ae6cf 100644
--- a/src/Configuration.KeyPerFile/test/Microsoft.Extensions.Configuration.KeyPerFile.Tests.csproj
+++ b/src/Configuration.KeyPerFile/test/Microsoft.Extensions.Configuration.KeyPerFile.Tests.csproj
@@ -9,7 +9,13 @@
   </ItemGroup>
 
   <ItemGroup>
+    <Reference Include="Microsoft.Extensions.Configuration.Abstractions" />
+    <Reference Include="Microsoft.Extensions.Configuration.Binder" />
+    <Reference Include="Microsoft.Extensions.Configuration.FileExtensions" />
     <Reference Include="Microsoft.Extensions.Configuration.KeyPerFile" />
+    <Reference Include="Microsoft.Extensions.Configuration" />
+    <Reference Include="Microsoft.Extensions.FileProviders.Abstractions" />
+    <Reference Include="Microsoft.Extensions.Primitives" />
   </ItemGroup>
 
 </Project>
diff --git a/src/FileProviders/Embedded/test/Microsoft.Extensions.FileProviders.Embedded.Tests.csproj b/src/FileProviders/Embedded/test/Microsoft.Extensions.FileProviders.Embedded.Tests.csproj
index 8024fb44fd..8377747702 100644
--- a/src/FileProviders/Embedded/test/Microsoft.Extensions.FileProviders.Embedded.Tests.csproj
+++ b/src/FileProviders/Embedded/test/Microsoft.Extensions.FileProviders.Embedded.Tests.csproj
@@ -9,7 +9,9 @@
   </ItemGroup>
 
   <ItemGroup>
+    <Reference Include="Microsoft.Extensions.FileProviders.Abstractions" />
     <Reference Include="Microsoft.Extensions.FileProviders.Embedded" />
+    <Reference Include="Microsoft.Extensions.Primitives" />
   </ItemGroup>
 
 </Project>
diff --git a/src/HealthChecks/HealthChecks/test/Microsoft.Extensions.Diagnostics.HealthChecks.Tests.csproj b/src/HealthChecks/HealthChecks/test/Microsoft.Extensions.Diagnostics.HealthChecks.Tests.csproj
index 08cd6a35f1..21763e5165 100644
--- a/src/HealthChecks/HealthChecks/test/Microsoft.Extensions.Diagnostics.HealthChecks.Tests.csproj
+++ b/src/HealthChecks/HealthChecks/test/Microsoft.Extensions.Diagnostics.HealthChecks.Tests.csproj
@@ -8,8 +8,15 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <Reference Include="Microsoft.Extensions.DependencyInjection.Abstractions" />
+    <Reference Include="Microsoft.Extensions.DependencyInjection" />
     <Reference Include="Microsoft.Extensions.Diagnostics.HealthChecks" />
+    <Reference Include="Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions" />
+    <Reference Include="Microsoft.Extensions.Hosting.Abstractions" />
+    <Reference Include="Microsoft.Extensions.Logging.Abstractions" />
     <Reference Include="Microsoft.Extensions.Logging.Testing" />
+    <Reference Include="Microsoft.Extensions.Logging" />
+    <Reference Include="Microsoft.Extensions.Options" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/JSInterop/Microsoft.JSInterop/test/Microsoft.JSInterop.Tests.csproj b/src/JSInterop/Microsoft.JSInterop/test/Microsoft.JSInterop.Tests.csproj
index a39b082180..34ac70b801 100644
--- a/src/JSInterop/Microsoft.JSInterop/test/Microsoft.JSInterop.Tests.csproj
+++ b/src/JSInterop/Microsoft.JSInterop/test/Microsoft.JSInterop.Tests.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="../src/Microsoft.JSInterop.csproj" />
+    <Reference Include="Microsoft.JSInterop" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Localization/Localization/test/Microsoft.Extensions.Localization.Tests.csproj b/src/Localization/Localization/test/Microsoft.Extensions.Localization.Tests.csproj
index 32c6263ac3..17254e2110 100644
--- a/src/Localization/Localization/test/Microsoft.Extensions.Localization.Tests.csproj
+++ b/src/Localization/Localization/test/Microsoft.Extensions.Localization.Tests.csproj
@@ -5,9 +5,16 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <Reference Include="Microsoft.Extensions.Localization.Abstractions" />
     <Reference Include="Microsoft.Extensions.Localization" />
+    <Reference Include="Microsoft.Extensions.DependencyInjection.Abstractions" />
     <Reference Include="Microsoft.Extensions.DependencyInjection" />
+    <Reference Include="Microsoft.Extensions.Logging.Abstractions" />
     <Reference Include="Microsoft.Extensions.Logging.Testing" />
+    <Reference Include="Microsoft.Extensions.Logging.Abstractions" />
+    <Reference Include="Microsoft.Extensions.Logging" />
+    <Reference Include="Microsoft.Extensions.Options" />
+    <Reference Include="Microsoft.Extensions.Primitives" />
   </ItemGroup>
 
 </Project>
diff --git a/src/ObjectPool/test/Microsoft.Extensions.ObjectPool.Tests.csproj b/src/ObjectPool/test/Microsoft.Extensions.ObjectPool.Tests.csproj
index 8c14917a65..1f2ad67664 100644
--- a/src/ObjectPool/test/Microsoft.Extensions.ObjectPool.Tests.csproj
+++ b/src/ObjectPool/test/Microsoft.Extensions.ObjectPool.Tests.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\src\Microsoft.Extensions.ObjectPool.csproj" />
+    <Reference Include="Microsoft.Extensions.ObjectPool" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Testing/test/Microsoft.AspNetCore.Testing.Tests.csproj b/src/Testing/test/Microsoft.AspNetCore.Testing.Tests.csproj
index acfb34b320..e9d0dca4ae 100644
--- a/src/Testing/test/Microsoft.AspNetCore.Testing.Tests.csproj
+++ b/src/Testing/test/Microsoft.AspNetCore.Testing.Tests.csproj
@@ -14,10 +14,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\src\Microsoft.AspNetCore.Testing.csproj" />
-  </ItemGroup>
-
-  <ItemGroup>
+    <Reference Include="Microsoft.AspNetCore.Testing" />
     <Reference Include="System.Runtime.InteropServices.RuntimeInformation" />
   </ItemGroup>
 
diff --git a/src/WebEncoders/test/Microsoft.Extensions.WebEncoders.Tests.csproj b/src/WebEncoders/test/Microsoft.Extensions.WebEncoders.Tests.csproj
index 5a28d38065..68ad589e3f 100755
--- a/src/WebEncoders/test/Microsoft.Extensions.WebEncoders.Tests.csproj
+++ b/src/WebEncoders/test/Microsoft.Extensions.WebEncoders.Tests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFrameworks>netcoreapp3.0;net472</TargetFrameworks>
@@ -6,6 +6,7 @@
 
   <ItemGroup>
     <Reference Include="Microsoft.Extensions.WebEncoders" />
+    <Reference Include="Microsoft.Extensions.DependencyInjection.Abstractions" />
     <Reference Include="Microsoft.Extensions.DependencyInjection" />
   </ItemGroup>