diff --git a/AIStudyApp/AIStudyApp/ContentView.swift b/AIStudyApp/AIStudyApp/ContentView.swift
index 7f6ebc7..863a9ca 100644
--- a/AIStudyApp/AIStudyApp/ContentView.swift
+++ b/AIStudyApp/AIStudyApp/ContentView.swift
@@ -1,4 +1,5 @@
 import SwiftUI
+import Combine
 
 // MARK: - TabBar visibility state