diff --git a/tests/StbImageSharp.Testing/StbImageSharp.Testing.csproj b/tests/StbImageSharp.Testing/StbImageSharp.Testing.csproj
index 78d587b..d62aa7a 100644
--- a/tests/StbImageSharp.Testing/StbImageSharp.Testing.csproj
+++ b/tests/StbImageSharp.Testing/StbImageSharp.Testing.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages/SixLabors.ImageSharp.3.1.3/build/SixLabors.ImageSharp.props" Condition="Exists('..\..\packages/SixLabors.ImageSharp.3.1.3/build/SixLabors.ImageSharp.props')" />
   <Import Project="..\..\packages\Microsoft.Net.Compilers.Toolset.3.1.0\build\Microsoft.Net.Compilers.Toolset.props" Condition="Exists('..\..\packages\Microsoft.Net.Compilers.Toolset.3.1.0\build\Microsoft.Net.Compilers.Toolset.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
@@ -91,5 +92,6 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use 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\Microsoft.Net.Compilers.Toolset.3.1.0\build\Microsoft.Net.Compilers.Toolset.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Net.Compilers.Toolset.3.1.0\build\Microsoft.Net.Compilers.Toolset.props'))" />
+    <Error Condition="!Exists('..\..\packages/SixLabors.ImageSharp.3.1.3/build/SixLabors.ImageSharp.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages/SixLabors.ImageSharp.3.1.3/build/SixLabors.ImageSharp.props'))" />
   </Target>
 </Project>
\ No newline at end of file
diff --git a/tests/StbImageSharp.Testing/packages.config b/tests/StbImageSharp.Testing/packages.config
index 8c4fc40..098e743 100644
--- a/tests/StbImageSharp.Testing/packages.config
+++ b/tests/StbImageSharp.Testing/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="Microsoft.Net.Compilers.Toolset" version="3.1.0" targetFramework="net472" developmentDependency="true" />
   <package id="SixLabors.Core" version="1.0.0-beta0008" targetFramework="net472" />
-  <package id="SixLabors.ImageSharp" version="1.0.0-beta0007" targetFramework="net472" />
+  <package id="SixLabors.ImageSharp" version="3.1.3" targetFramework="net472" />
   <package id="System.Buffers" version="4.4.0" targetFramework="net472" />
   <package id="System.Memory" version="4.5.1" targetFramework="net472" />
   <package id="System.Numerics.Vectors" version="4.5.0" targetFramework="net472" />