diff --git a/TypeContractor.Tests/TypeContractor.Tests.csproj b/TypeContractor.Tests/TypeContractor.Tests.csproj
index 4d69de9..5b73865 100644
--- a/TypeContractor.Tests/TypeContractor.Tests.csproj
+++ b/TypeContractor.Tests/TypeContractor.Tests.csproj
@@ -22,7 +22,7 @@
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-		<PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+		<PackageReference Include="xunit.runner.visualstudio" Version="4.0.0">
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