diff --git a/src/models/plsylist_tracks.py b/src/models/plsylist_tracks.py
index 5ebd8ea..e81ff0b 100644
--- a/src/models/plsylist_tracks.py
+++ b/src/models/plsylist_tracks.py
@@ -57,7 +57,7 @@ class ContentVersion(BaseModel):
 
 
 class Meta(BaseModel):
-    contentVersion: ContentVersion
+    contentVersion: Optional[ContentVersion] = None
 
 
 class Datum(BaseModel):