diff --git a/build/repo.targets b/build/repo.targets
index bd7246818c..4928a6e824 100644
--- a/build/repo.targets
+++ b/build/repo.targets
@@ -26,7 +26,7 @@
   </PropertyGroup>
 
   <Target Name="PrepareOutputPaths">
-    <MakeDir Directories="$(ArtifactsDir);$(BuildDir);$(LineupBuildDir)" />
+    <MakeDir Directories="$(ArtifactsDir);$(BuildDir);$(LineupBuildDir);$(IntermediateExternalPackageDir);$(IntermediateMirrorPackageDir)" />
   </Target>
 
   <Target Name="RestoreExternalDependencies">
@@ -88,7 +88,7 @@
     <Error Text="No solutions were found in '$(SubmoduleRoot)'" Condition="@(Solution->Count()) == 0" />
   </Target>
 
-  <Target Name="GeneratePropsFiles" DependsOnTargets="ResolveRepoInfo">
+  <Target Name="GeneratePropsFiles" DependsOnTargets="PrepareOutputPaths;ResolveRepoInfo">
     <ItemGroup>
       <_LineupPackages Include="@(ExternalDependency)" />
       <_LineupPackages Include="%(ArtifactInfo.PackageId)" Version="%(ArtifactInfo.Version)" Condition=" '%(ArtifactInfo.ArtifactType)' == 'NuGetPackage' " />