diff --git a/GAMSS/Sources/App/GAMSSApp.swift b/GAMSS/Sources/App/GAMSSApp.swift
index 8d9e395..e6848b6 100644
--- a/GAMSS/Sources/App/GAMSSApp.swift
+++ b/GAMSS/Sources/App/GAMSSApp.swift
@@ -9,12 +9,12 @@ import SwiftUI
 import FirebaseCore
 
 class AppDelegate: NSObject, UIApplicationDelegate {
-  func application(_ application: UIApplication,
-                   didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
-    FirebaseApp.configure()
-
-    return true
-  }
+    func application(_ application: UIApplication,
+                     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
+        FirebaseApp.configure()
+        
+        return true
+    }
 }
 
 @main
@@ -24,10 +24,26 @@ struct GAMSSApp: App {
     var body: some Scene {
         WindowGroup {
             RootView()
-              .preferredColorScheme(.light)
+                .preferredColorScheme(.light)
         }
         // 디자인 토큰이 다크모드 값을 갖고 있지만 디자이너가 아직 다크모드 화면을 설계하지
         // 않았다 — 시스템 다크모드를 그대로 따라가면 색상이 라이트/다크 목적과 반대로
         // 뒤집혀 보이므로 앱 전체를 라이트 모드로 고정한다.
     }
 }
+
+// - MARK: 네비게이션 뒤로가기 제스처
+extension UINavigationController: UIGestureRecognizerDelegate {
+    override public func viewDidLoad() {
+        super.viewDidLoad()
+        interactivePopGestureRecognizer?.delegate = self
+    }
+    
+    public func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
+        return viewControllers.count > 1
+    }
+    
+    public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldBeRequiredToFailBy otherGestureRecognizer: UIGestureRecognizer) -> Bool {
+        return gestureRecognizer.isEqual(self.interactivePopGestureRecognizer)
+    }
+}