diff --git a/src/NzbDrone.Core/Indexers/Definitions/AudioBookBay.cs b/src/NzbDrone.Core/Indexers/Definitions/AudioBookBay.cs
index 443743215..98f999375 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/AudioBookBay.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/AudioBookBay.cs
@@ -20,6 +20,7 @@
 
 namespace NzbDrone.Core.Indexers.Definitions;
 
+[Obsolete("User Agent blocked")]
 public class AudioBookBay : TorrentIndexerBase<NoAuthTorrentBaseSettings>
 {
     public override string Name => "AudioBook Bay";