diff --git a/eng/Workarounds.targets b/eng/Workarounds.targets
index 32f68d1bc3..8f51713dc0 100644
--- a/eng/Workarounds.targets
+++ b/eng/Workarounds.targets
@@ -58,4 +58,15 @@
       <TransitiveFrameworkReference Remove="NETStandard.Library" />
     </ItemGroup>
   </Target>
+
+  <!-- Work around https://github.com/dotnet/aspnetcore/issues/18393 -->
+  <Target Name="_UpdateRazorGenerateAssemblyReferences"
+          AfterTargets="ResolveAssemblyReferenceRazorGenerateInputs"
+          DependsOnTargets="FindReferenceAssembliesForReferences"
+          Condition="'$(CompileUsingReferenceAssemblies)' != 'false'">
+    <ItemGroup>
+      <RazorReferencePath Remove="@(ReferencePath)" />
+      <RazorReferencePath Include="@(ReferencePathWithRefAssemblies)" />
+    </ItemGroup>
+  </Target>
 </Project>
diff --git a/src/Components/test/testassets/TestServer/Components.TestServer.csproj b/src/Components/test/testassets/TestServer/Components.TestServer.csproj
index 6c29275b2c..d512e61f61 100644
--- a/src/Components/test/testassets/TestServer/Components.TestServer.csproj
+++ b/src/Components/test/testassets/TestServer/Components.TestServer.csproj
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>$(DefaultNetCoreTargetFramework)</TargetFramework>
+    <CompileUsingReferenceAssemblies>false</CompileUsingReferenceAssemblies>
   </PropertyGroup>
 
   <ItemGroup>