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 096cf2e2e0..7abceed702 100644
--- a/src/Configuration.KeyPerFile/test/Microsoft.Extensions.Configuration.KeyPerFile.Tests.csproj
+++ b/src/Configuration.KeyPerFile/test/Microsoft.Extensions.Configuration.KeyPerFile.Tests.csproj
@@ -15,6 +15,7 @@
     <Reference Include="Microsoft.Extensions.Configuration.KeyPerFile" />
     <Reference Include="Microsoft.Extensions.Configuration" />
     <Reference Include="Microsoft.Extensions.FileProviders.Abstractions" />
+    <Reference Include="Microsoft.Extensions.FileProviders.Physical" />
     <Reference Include="Microsoft.Extensions.Primitives" />
   </ItemGroup>
 
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 b6fa1537da..1591585b82 100644
--- a/src/HealthChecks/HealthChecks/test/Microsoft.Extensions.Diagnostics.HealthChecks.Tests.csproj
+++ b/src/HealthChecks/HealthChecks/test/Microsoft.Extensions.Diagnostics.HealthChecks.Tests.csproj
@@ -17,6 +17,7 @@
     <Reference Include="Microsoft.Extensions.Logging.Testing" />
     <Reference Include="Microsoft.Extensions.Logging" />
     <Reference Include="Microsoft.Extensions.Options" />
+    <Reference Include="Microsoft.Extensions.Primitives" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/WebEncoders/test/Microsoft.Extensions.WebEncoders.Tests.csproj b/src/WebEncoders/test/Microsoft.Extensions.WebEncoders.Tests.csproj
index 0f93bf3fc6..3bf6fc1c9c 100755
--- a/src/WebEncoders/test/Microsoft.Extensions.WebEncoders.Tests.csproj
+++ b/src/WebEncoders/test/Microsoft.Extensions.WebEncoders.Tests.csproj
@@ -8,6 +8,7 @@
     <Reference Include="Microsoft.Extensions.WebEncoders" />
     <Reference Include="Microsoft.Extensions.DependencyInjection.Abstractions" />
     <Reference Include="Microsoft.Extensions.DependencyInjection" />
+    <Reference Include="Microsoft.Extensions.Options" />
   </ItemGroup>
 
 </Project>