diff --git a/TreeCollections/Demos/Demos.csproj b/TreeCollections/Demos/Demos.csproj
index 09e84cd..9a96647 100644
--- a/TreeCollections/Demos/Demos.csproj
+++ b/TreeCollections/Demos/Demos.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
   <ItemGroup>