diff --git a/Model/Entities/Entities.swift b/Model/Entities/Entities.swift
index 2aed88af..1704c8db 100644
--- a/Model/Entities/Entities.swift
+++ b/Model/Entities/Entities.swift
@@ -121,7 +121,7 @@ class OutlineItem: ObservableObject, Identifiable {
     }
 }
 
-class Tab: NSManagedObject, Identifiable {
+final class Tab: NSManagedObject, Identifiable {
     @NSManaged var created: Date
     @NSManaged var interactionState: Data?
     @NSManaged var lastOpened: Date