diff --git a/eng/common/internal/Tools.csproj b/eng/common/internal/Tools.csproj
index 1a81ff906f6..1a39a7ef3f6 100644
--- a/eng/common/internal/Tools.csproj
+++ b/eng/common/internal/Tools.csproj
@@ -12,8 +12,12 @@
     <PackageReference Include="Drop.App" Version="$(DropAppVersion)" ExcludeAssets="all" Condition="'$(UsingToolVisualStudioIbcTraining)' == 'true'"/>
   </ItemGroup>
   <PropertyGroup>
-    <RestoreSources>
-      https://devdiv.pkgs.visualstudio.com/_packaging/8f470c7e-ac49-4afe-a6ee-cf784e438b93/nuget/v3/index.json;
+    <RestoreSources></RestoreSources>
+    <RestoreSources Condition="'$(UsingToolIbcOptimization)' == 'true'">
+      https://devdiv.pkgs.visualstudio.com/_packaging/dotnet-core-internal-tooling/nuget/v3/index.json;
+    </RestoreSources>
+    <RestoreSources Condition="'$(UsingToolVisualStudioIbcTraining)' == 'true'">
+      $(RestoreSources);
       https://devdiv.pkgs.visualstudio.com/_packaging/VS/nuget/v3/index.json;
     </RestoreSources>
   </PropertyGroup>