diff --git a/tests/NHapi.NUnit/NHapi.NUnit.csproj b/tests/NHapi.NUnit/NHapi.NUnit.csproj
index e5c097f2b..f49fbdac5 100644
--- a/tests/NHapi.NUnit/NHapi.NUnit.csproj
+++ b/tests/NHapi.NUnit/NHapi.NUnit.csproj
@@ -28,7 +28,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="NUnit" Version="4.3.2" />
+    <PackageReference Include="NUnit" Version="4.5.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="5.2.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageReference Include="coverlet.collector" Version="6.0.4">