diff --git a/ClosedXML_Tests/ClosedXML_Tests.csproj b/ClosedXML_Tests/ClosedXML_Tests.csproj
index 9ddb48c..47cca6a 100644
--- a/ClosedXML_Tests/ClosedXML_Tests.csproj
+++ b/ClosedXML_Tests/ClosedXML_Tests.csproj
@@ -48,8 +48,9 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="Microsoft.CSharp" />
-    <Reference Include="nunit.framework, Version=3.6.1.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
-      <HintPath>..\packages\NUnit.3.6.1\lib\net45\nunit.framework.dll</HintPath>
+    <Reference Include="nunit.framework, Version=3.4.1.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
+      <HintPath>..\packages\NUnit.3.4.1\lib\net45\nunit.framework.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.ComponentModel.DataAnnotations" />
@@ -268,12 +269,9 @@
     <EmbeddedResource Include="Resource\Examples\Ranges\AddingRowToTables.xlsx" />
     <EmbeddedResource Include="Resource\Examples\Misc\RightToLeft.xlsx" />
     <EmbeddedResource Include="Resource\Examples\PivotTables\PivotTables.xlsx" />
-    <None Include="packages.config">
-      <SubType>Designer</SubType>
-    </None>
+    <None Include="packages.config" />
     <EmbeddedResource Include="Resource\Examples\ImageHandling\ImageAnchors.xlsx" />
     <EmbeddedResource Include="Resource\Examples\ImageHandling\ImageFormats.xlsx" />
-    <EmbeddedResource Include="Resource\Examples\Misc\WorkbookProtection.xlsx" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Resource\Images\ImageHandling.png" />