diff --git a/lib/src/nuvigator.dart b/lib/src/nuvigator.dart
index ababbf1..60f4022 100644
--- a/lib/src/nuvigator.dart
+++ b/lib/src/nuvigator.dart
@@ -172,6 +172,10 @@ class NuvigatorState<T extends INuRouter> extends NavigatorState
     return widget.inheritableObservers;
   }
 
+  void addObserver(NavigatorObserver observer) {
+    widget.observers.add(observer);
+  }
+
   @override
   void initState() {
     parent = Nuvigator.of(context, nullOk: true);