diff --git a/src/Microsoft.AspNetCore.Blazor.Build/targets/Blazor.MonoRuntime.targets b/src/Microsoft.AspNetCore.Blazor.Build/targets/Blazor.MonoRuntime.targets
index ad8453459a..1be7c0a433 100644
--- a/src/Microsoft.AspNetCore.Blazor.Build/targets/Blazor.MonoRuntime.targets
+++ b/src/Microsoft.AspNetCore.Blazor.Build/targets/Blazor.MonoRuntime.targets
@@ -588,7 +588,7 @@
   <Target
     Name="_GenerateBlazorIndexHtml"
     DependsOnTargets="_ResolveBlazorIndexHtmlInputs"
-    Inputs="$(BlazorBuildIndexInputsCache)"
+    Inputs="$(BlazorBuildIndexInputsCache);$(BlazorIndexHtml)"
     Outputs="$(BlazorIndexHtmlOutputPath)">
     <ItemGroup>
       <_AppReferences Include="@(BlazorItemOutput->WithMetadataValue('Type','Assembly')->WithMetadataValue('PrimaryOutput','')->'%(FileName)%(Extension)')" />