diff --git a/app/MindWork AI Studio/Settings/DataModel/Data.cs b/app/MindWork AI Studio/Settings/DataModel/Data.cs
index 9c4442be..2dd099eb 100644
--- a/app/MindWork AI Studio/Settings/DataModel/Data.cs	
+++ b/app/MindWork AI Studio/Settings/DataModel/Data.cs	
@@ -46,6 +46,11 @@ public sealed class Data
     /// </summary>
     public uint NextEmbeddingNum { get; set; } = 1;
 
+    /// <summary>
+    /// The next data source number to use.
+    /// </summary>
+    public uint NextDataSourceNum { get; set; } = 1;
+
     /// <summary>
     /// The next profile number to use.
     /// </summary>