diff --git a/tests/csharp/Reference.Tests.CSharp.NUnit/Reference.Tests.CSharp.NUnit.csproj b/tests/csharp/Reference.Tests.CSharp.NUnit/Reference.Tests.CSharp.NUnit.csproj
index 1efa51b..b006368 100644
--- a/tests/csharp/Reference.Tests.CSharp.NUnit/Reference.Tests.CSharp.NUnit.csproj
+++ b/tests/csharp/Reference.Tests.CSharp.NUnit/Reference.Tests.CSharp.NUnit.csproj
@@ -12,7 +12,7 @@
         <PackageReference Include="OpenTracing" Version="0.12.0" />
         <PackageReference Include="Serilog" Version="2.8.0" />
         <PackageReference Include="NLog" Version="4.6.3" />
-        <PackageReference Include="log4net" Version="2.0.8" />
+        <PackageReference Include="log4net" Version="2.0.10" />
     </ItemGroup>
 
     <ItemGroup>