diff --git a/test/NHSNumberValidator.Test/NHSNumberValidator.Test.csproj b/test/NHSNumberValidator.Test/NHSNumberValidator.Test.csproj
index 6809ccc..141b351 100644
--- a/test/NHSNumberValidator.Test/NHSNumberValidator.Test.csproj
+++ b/test/NHSNumberValidator.Test/NHSNumberValidator.Test.csproj
@@ -16,7 +16,7 @@
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-        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0">
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
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