diff --git a/PackageIndexer/PlatformPackageDefinition.cs b/PackageIndexer/PlatformPackageDefinition.cs
index 30c5e9d6..87ffad81 100644
--- a/PackageIndexer/PlatformPackageDefinition.cs
+++ b/PackageIndexer/PlatformPackageDefinition.cs
@@ -118,6 +118,10 @@ internal static class PlatformPackageDefinition
             PackageFilterExpression.Parse("Microsoft.Extensions.ML"),
             // Documented under .NET Aspire moniker.
             PackageFilterExpression.Parse("Microsoft.Extensions.ServiceDiscovery*"),
+            // Fails to install in the CI pipeline - tracked by https://dev.azure.com/ceapex/Engineering/_workitems/edit/1146088.
+            PackageFilterExpression.Parse("Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore"),
+            // Public pkg but purely meant as a provider-facing helper.
+            PackageFilterExpression.Parse("Microsoft.Extensions.VectorData.ConformanceTests"),
             // Old R9 packages.
             PackageFilterExpression.Parse("Microsoft.Extensions.DependencyInjection.NamedService"),
             PackageFilterExpression.Parse("Microsoft.Extensions.DependencyInjection.Pools"),