diff --git a/tests/NHapi.NUnit/NHapi.NUnit.csproj b/tests/NHapi.NUnit/NHapi.NUnit.csproj
index 289dc5c19..ec859c17e 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="4.3.0" />
+    <PackageReference Include="NUnit" Version="4.3.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.2">