diff --git a/source/DirectoryServices.Tests/DirectoryServices.Tests.csproj b/source/DirectoryServices.Tests/DirectoryServices.Tests.csproj
index 804131e..01deacf 100644
--- a/source/DirectoryServices.Tests/DirectoryServices.Tests.csproj
+++ b/source/DirectoryServices.Tests/DirectoryServices.Tests.csproj
@@ -7,7 +7,7 @@
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-    <PackageReference Include="NUnit" Version="3.10.1" />
+    <PackageReference Include="NUnit" Version="3.13.2" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.10.0" />
     <PackageReference Include="Octopus.Time" Version="1.1.6" />
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