diff --git a/Chapter04/ASC.Utilities/ASC.Utilities.csproj b/Chapter04/ASC.Utilities/ASC.Utilities.csproj
index 4a39343..51a82e8 100644
--- a/Chapter04/ASC.Utilities/ASC.Utilities.csproj
+++ b/Chapter04/ASC.Utilities/ASC.Utilities.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="10.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
 </Project>
\ No newline at end of file