diff --git a/example/lib/demo/issue191_toast.dart b/example/lib/demo/issue191_toast.dart
index 4f9295b..4f0b725 100644
--- a/example/lib/demo/issue191_toast.dart
+++ b/example/lib/demo/issue191_toast.dart
@@ -27,5 +27,14 @@ class MyApp extends StatelessWidget {
     await Future.delayed(const Duration(seconds: 1));
     await SmartDialog.dismiss(status: SmartStatus.loading);
     SmartDialog.showToast('test toast');
+    // SmartDialog.show(
+    //   builder: (_) {
+    //     return Container(
+    //       color: Colors.white,
+    //       padding: const EdgeInsets.all(30),
+    //       child: const Text('test dialog'),
+    //     );
+    //   },
+    // );
   }
 }
diff --git a/lib/src/custom/main_dialog.dart b/lib/src/custom/main_dialog.dart
index f738d6c..48c72ab 100644
--- a/lib/src/custom/main_dialog.dart
+++ b/lib/src/custom/main_dialog.dart
@@ -233,6 +233,9 @@ class MainDialog {
     );
 
     DialogProxy.instance.smartOverlayController.dismiss();
+
+    // safety await
+    await Future.delayed(const Duration(milliseconds: 20));
   }
 
   Widget getWidget() => Offstage(offstage: !visible, child: _widget);
diff --git a/pubspec.yaml b/pubspec.yaml
index b52b769..18fdbb1 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -3,7 +3,7 @@ description:
   An elegant Flutter Dialog solution,
   Easily implement Toast, Loading and custom Dialog,
   Make the use of the dialog easier!
-version: 4.9.7+5
+version: 4.9.7+6
 homepage: https://github.com/fluttercandies/flutter_smart_dialog
 # flutter pub publish --server=https://pub.dartlang.org
 # flutter build web --release --base-href="/flutter_smart_dialog/web/"