diff --git a/src/firely-net-sdk-tests.props b/src/firely-net-sdk-tests.props
index c1effa543b..812d5816c8 100644
--- a/src/firely-net-sdk-tests.props
+++ b/src/firely-net-sdk-tests.props
@@ -27,7 +27,7 @@
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
 		<PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
 		<PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
-		<PackageReference Include="xunit" Version="2.6.5" />
+		<PackageReference Include="xunit" Version="2.6.6" />
 		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>