diff --git a/TensionDev.ULID.Serialization.JsonNet.Tests/TensionDev.ULID.Serialization.JsonNet.Tests.csproj b/TensionDev.ULID.Serialization.JsonNet.Tests/TensionDev.ULID.Serialization.JsonNet.Tests.csproj
index d134498..55bb2f0 100644
--- a/TensionDev.ULID.Serialization.JsonNet.Tests/TensionDev.ULID.Serialization.JsonNet.Tests.csproj
+++ b/TensionDev.ULID.Serialization.JsonNet.Tests/TensionDev.ULID.Serialization.JsonNet.Tests.csproj
@@ -13,7 +13,7 @@
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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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       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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