diff --git a/varken/structures.py b/varken/structures.py
index 3c977d4..4c5ca58 100644
--- a/varken/structures.py
+++ b/varken/structures.py
@@ -265,6 +265,7 @@ class TautulliStream(NamedTuple):
     transcode_progress: int = None
     subtitle_language: str = None
     stream_subtitle_container: str = None
+    sub_type: str = None
 
 
 class TVShow(NamedTuple):
@@ -323,4 +324,4 @@ class Movie(NamedTuple):
     physicalRelease: str = None
     physicalReleaseNote: str = None
     website: str = None
-    id: int = None
\ No newline at end of file
+    id: int = None