diff --git a/Structs/Filesystems.cs b/Structs/Filesystems.cs
index ec52ec1..ff0ebc5 100644
--- a/Structs/Filesystems.cs
+++ b/Structs/Filesystems.cs
@@ -40,7 +40,7 @@
 using System;
 using System.Diagnostics.CodeAnalysis;
 using System.Runtime.InteropServices;
-using System.Text.Json.Serialization;
+using Newtonsoft.Json;
 
 namespace Aaru.CommonTypes.Structs
 {