diff --git a/src/Microsoft.AspNetCore.Authentication.AzureAD.UI/Microsoft.AspNetCore.Authentication.AzureAD.UI.csproj b/src/Microsoft.AspNetCore.Authentication.AzureAD.UI/Microsoft.AspNetCore.Authentication.AzureAD.UI.csproj
index b5f7be1ade..710d066434 100644
--- a/src/Microsoft.AspNetCore.Authentication.AzureAD.UI/Microsoft.AspNetCore.Authentication.AzureAD.UI.csproj
+++ b/src/Microsoft.AspNetCore.Authentication.AzureAD.UI/Microsoft.AspNetCore.Authentication.AzureAD.UI.csproj
@@ -22,6 +22,11 @@
        <_Parameter1>BuildNumber</_Parameter1>
        <_Parameter2>$(BuildNumber)</_Parameter2>
      </RazorAssemblyAttribute>
+
+     <RazorTargetAssemblyAttribute Include="System.Reflection.AssemblyMetadataAttribute" Condition="'$(BuildNumber)' != ''">
+       <_Parameter1>BuildNumber</_Parameter1>
+       <_Parameter2>$(BuildNumber)</_Parameter2>
+     </RazorTargetAssemblyAttribute>
    </ItemGroup>
  
    <ItemGroup>
diff --git a/src/Microsoft.AspNetCore.Authentication.AzureADB2C.UI/Microsoft.AspNetCore.Authentication.AzureADB2C.UI.csproj b/src/Microsoft.AspNetCore.Authentication.AzureADB2C.UI/Microsoft.AspNetCore.Authentication.AzureADB2C.UI.csproj
index 8c91b10727..e63e02980f 100644
--- a/src/Microsoft.AspNetCore.Authentication.AzureADB2C.UI/Microsoft.AspNetCore.Authentication.AzureADB2C.UI.csproj
+++ b/src/Microsoft.AspNetCore.Authentication.AzureADB2C.UI/Microsoft.AspNetCore.Authentication.AzureADB2C.UI.csproj
@@ -22,6 +22,11 @@
        <_Parameter1>BuildNumber</_Parameter1>
        <_Parameter2>$(BuildNumber)</_Parameter2>
      </RazorAssemblyAttribute>
+
+    <RazorTargetAssemblyAttribute Include="System.Reflection.AssemblyMetadataAttribute" Condition="'$(BuildNumber)' != ''">
+       <_Parameter1>BuildNumber</_Parameter1>
+       <_Parameter2>$(BuildNumber)</_Parameter2>
+     </RazorTargetAssemblyAttribute>
    </ItemGroup>
  
    <ItemGroup>