diff --git a/src/HUDMerger/Models/VPK.cs b/src/HUDMerger/Models/VPK.cs
index 06c27a5..ef4214f 100644
--- a/src/HUDMerger/Models/VPK.cs
+++ b/src/HUDMerger/Models/VPK.cs
@@ -7,6 +7,9 @@
 
 namespace HUDMerger.Models;
 
+/// <summary>
+/// https://developer.valvesoftware.com/wiki/VPK_(file_format)
+/// </summary>
 public partial class VPK
 {
 	[GeneratedRegex(@"_dir\.vpk$")]