diff --git a/Source/Blinkenlights.Splines.Tests/Blinkenlights.Splines.Tests.csproj b/Source/Blinkenlights.Splines.Tests/Blinkenlights.Splines.Tests.csproj
index f116931..b8639fd 100644
--- a/Source/Blinkenlights.Splines.Tests/Blinkenlights.Splines.Tests.csproj
+++ b/Source/Blinkenlights.Splines.Tests/Blinkenlights.Splines.Tests.csproj
@@ -11,7 +11,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.0"/>
-        <PackageReference Include="NUnit" Version="4.1.0"/>
+        <PackageReference Include="NUnit" Version="4.2.1"/>
         <PackageReference Include="NUnit3TestAdapter" Version="4.6.0"/>
         <PackageReference Include="NUnit.Analyzers" Version="4.3.0"/>
         <PackageReference Include="coverlet.collector" Version="6.0.2"/>