diff --git a/1-csharp/Serialization/Serialization/Serialization.csproj b/1-csharp/Serialization/Serialization/Serialization.csproj
index f730ef5..6c27696 100644
--- a/1-csharp/Serialization/Serialization/Serialization.csproj
+++ b/1-csharp/Serialization/Serialization/Serialization.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
 </Project>