diff --git a/tests/Assemblies/JsonNetOld/JsonNetOld.csproj b/tests/Assemblies/JsonNetOld/JsonNetOld.csproj
index 6e39d8e..85d285f 100644
--- a/tests/Assemblies/JsonNetOld/JsonNetOld.csproj
+++ b/tests/Assemblies/JsonNetOld/JsonNetOld.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1"/>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1"/>
     <PackageReference Include="Microsoft.Extensions.Logging" Version="2.2.0"/>
   </ItemGroup>