diff --git a/test/Library/Tuio.Test/Tuio.Test.csproj b/test/Library/Tuio.Test/Tuio.Test.csproj
index 8bea09e4..204c7a57 100644
--- a/test/Library/Tuio.Test/Tuio.Test.csproj
+++ b/test/Library/Tuio.Test/Tuio.Test.csproj
@@ -29,7 +29,7 @@
         <PackageReference Include="Microsoft.CodeCoverage" Version="18.0.1" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
         <PackageReference Include="Moq" Version="4.20.72" />
-        <PackageReference Include="NUnit" Version="4.4.0" />
+        <PackageReference Include="NUnit" Version="4.5.1" />
         <PackageReference Include="NUnit.Analyzers" Version="4.11.2">
           <PrivateAssets>all</PrivateAssets>
           <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>