diff --git a/test/Graph1x.UnitTests/Graph1x.UnitTests.csproj b/test/Graph1x.UnitTests/Graph1x.UnitTests.csproj
index dfcf977..4d366de 100644
--- a/test/Graph1x.UnitTests/Graph1x.UnitTests.csproj
+++ b/test/Graph1x.UnitTests/Graph1x.UnitTests.csproj
@@ -23,7 +23,7 @@
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-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
         <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
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