diff --git a/Sources/BottomSheet/Core/Extensions/UIViewController+Convenience.swift b/Sources/BottomSheet/Core/Extensions/UIViewController+Convenience.swift
index 990a51f..2e69656 100644
--- a/Sources/BottomSheet/Core/Extensions/UIViewController+Convenience.swift
+++ b/Sources/BottomSheet/Core/Extensions/UIViewController+Convenience.swift
@@ -47,21 +47,26 @@ public final class DefaultBottomSheetModalDismissalHandler: BottomSheetModalDism
     // MARK: - Private properties
 
     private weak var presentingViewController: UIViewController?
+    private let _canBeDismissed: () -> Bool
     private let dismissCompletion: (() -> Void)?
 
     // MARK: - Init
 
     init(
         presentingViewController: UIViewController?,
+        canBeDismissed: @escaping (() -> Bool),
         dismissCompletion: (() -> Void)?
     ) {
         self.presentingViewController = presentingViewController
+        self._canBeDismissed = canBeDismissed
         self.dismissCompletion = dismissCompletion
     }
 
     // MARK: - BottomSheetModalDismissalHandler
 
-    public let canBeDismissed = true
+    public var canBeDismissed: Bool {
+        _canBeDismissed()
+    }
 
     public func performDismissal(animated: Bool) {
         presentingViewController?.presentedViewController?.dismiss(animated: animated, completion: dismissCompletion)
@@ -76,14 +81,20 @@ public extension UIViewController {
 
     private static var bottomSheetTransitionDelegateKey: UInt8 = 0
 
-    func presentBottomSheet(viewController: UIViewController, configuration: BottomSheetConfiguration) {
+    func presentBottomSheet(
+        viewController: UIViewController,
+        configuration: BottomSheetConfiguration,
+        canBeDismissed: @escaping (() -> Bool) = { true },
+        dismissCompletion: (() -> Void)? = nil
+    ) {
         weak var presentingViewController = self
         weak var currentBottomSheetTransitionDelegate: UIViewControllerTransitioningDelegate?
         let presentationControllerFactory = DefaultBottomSheetPresentationControllerFactory(configuration: configuration) {
-            DefaultBottomSheetModalDismissalHandler(presentingViewController: presentingViewController) {
+            DefaultBottomSheetModalDismissalHandler(presentingViewController: presentingViewController, canBeDismissed: canBeDismissed) {
                 if currentBottomSheetTransitionDelegate === presentingViewController?.bottomSheetTransitionDelegate {
                     presentingViewController?.bottomSheetTransitionDelegate = nil
                 }
+                dismissCompletion?()
             }
         }
         bottomSheetTransitionDelegate = BottomSheetTransitioningDelegate(
diff --git a/Sources/BottomSheet/Core/NavigationController/BottomSheetNavigationController.swift b/Sources/BottomSheet/Core/NavigationController/BottomSheetNavigationController.swift
index bb7d297..9675f64 100644
--- a/Sources/BottomSheet/Core/NavigationController/BottomSheetNavigationController.swift
+++ b/Sources/BottomSheet/Core/NavigationController/BottomSheetNavigationController.swift
@@ -26,6 +26,11 @@ public final class BottomSheetNavigationController: UINavigationController {
         super.init(rootViewController: rootViewController)
     }
 
+    override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
+        self.configuration = .default
+        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
+    }
+
     @available(*, unavailable)
     required init?(coder aDecoder: NSCoder) {
         fatalError("init(coder:) has not been implemented")