diff --git a/.gitignore b/.gitignore
index c36f64e5de..640725fa26 100644
--- a/.gitignore
+++ b/.gitignore
@@ -162,7 +162,8 @@ $RECYCLE.BIN/
 #################
 ## Cake
 #################
-tools/
+tools/*
+!tools/packages.config
 .nuget
 artifacts/
 nuget
diff --git a/samples/interop/WindowsInteropTest/WindowsInteropTest.csproj b/samples/interop/WindowsInteropTest/WindowsInteropTest.csproj
index 28e5e274d0..ac7d25a91e 100644
--- a/samples/interop/WindowsInteropTest/WindowsInteropTest.csproj
+++ b/samples/interop/WindowsInteropTest/WindowsInteropTest.csproj
@@ -181,5 +181,6 @@
   </ItemGroup>
   <Import Project="..\..\..\build\Rx.props" />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="..\..\..\build\SkiaSharp.props" />
   <Import Project="$(MSBuildThisFileDirectory)..\..\..\src\Shared\nuget.workaround.targets" />
 </Project>
\ No newline at end of file
diff --git a/tools/packages.config b/tools/packages.config
new file mode 100644
index 0000000000..5657d953fc
--- /dev/null
+++ b/tools/packages.config
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+    <package id="Cake" version="0.18.0" />
+</packages>