diff --git a/tests/EQ2Lexicon.ACTPlugin.Tests/EQ2Lexicon.ACTPlugin.Tests.csproj b/tests/EQ2Lexicon.ACTPlugin.Tests/EQ2Lexicon.ACTPlugin.Tests.csproj
index 65263c6..ed411b7 100644
--- a/tests/EQ2Lexicon.ACTPlugin.Tests/EQ2Lexicon.ACTPlugin.Tests.csproj
+++ b/tests/EQ2Lexicon.ACTPlugin.Tests/EQ2Lexicon.ACTPlugin.Tests.csproj
@@ -12,7 +12,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.1" />
     <!--
       coverlet.collector wires into the `dotnet test` data-collector with
       the "XPlat Code Coverage" name and drops a coverage.cobertura.xml