diff --git a/Claunia.Encoding.Tests/Claunia.Encoding.Tests.csproj b/Claunia.Encoding.Tests/Claunia.Encoding.Tests.csproj
index 9fb0e2d..ba8d9af 100644
--- a/Claunia.Encoding.Tests/Claunia.Encoding.Tests.csproj
+++ b/Claunia.Encoding.Tests/Claunia.Encoding.Tests.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\NUnit.3.11.0\build\NUnit.props" Condition="Exists('..\packages\NUnit.3.11.0\build\NUnit.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -28,10 +29,11 @@
     <ConsolePause>false</ConsolePause>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="System" />
-    <Reference Include="nunit.framework">
-      <HintPath>..\packages\NUnit.3.8.1\lib\net45\nunit.framework.dll</HintPath>
+    <Reference Include="nunit.framework, Version=3.11.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb">
+      <HintPath>..\packages\NUnit.3.11.0\lib\net45\nunit.framework.dll</HintPath>
+      <Private>True</Private>
     </Reference>
+    <Reference Include="System" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="LisaRoman.cs" />
@@ -50,4 +52,10 @@
     <None Include="packages.config" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105.The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\NUnit.3.11.0\build\NUnit.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\NUnit.3.11.0\build\NUnit.props'))" />
+  </Target>
 </Project>
\ No newline at end of file
diff --git a/Claunia.Encoding.Tests/packages.config b/Claunia.Encoding.Tests/packages.config
index 63a0b34..2f6bc1e 100644
--- a/Claunia.Encoding.Tests/packages.config
+++ b/Claunia.Encoding.Tests/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="NUnit" version="3.8.1" targetFramework="net45" />
+  <package id="NUnit" version="3.11.0" targetFramework="net45" />
 </packages>
\ No newline at end of file