diff --git a/packages/route/lib/src/middleware_pipeline.dart b/packages/route/lib/src/middleware_pipeline.dart
index beccba7d..97da1a33 100644
--- a/packages/route/lib/src/middleware_pipeline.dart
+++ b/packages/route/lib/src/middleware_pipeline.dart
@@ -35,7 +35,7 @@ class MiddlewarePipeline<T> {
 }
 
 /// Iterates through a [MiddlewarePipeline].
-class MiddlewarePipelineIterator<T> extends Iterator<RoutingResult<T>> {
+class MiddlewarePipelineIterator<T> implements Iterator<RoutingResult<T>> {
   final MiddlewarePipeline<T> pipeline;
   final Iterator<RoutingResult<T>> _inner;
 
diff --git a/packages/route/lib/src/routing_exception.dart b/packages/route/lib/src/routing_exception.dart
index bceb6cb5..4dd9b756 100644
--- a/packages/route/lib/src/routing_exception.dart
+++ b/packages/route/lib/src/routing_exception.dart
@@ -1,5 +1,5 @@
 /// Represents an error in route configuration or navigation.
-abstract class RoutingException extends Exception {
+abstract class RoutingException implements Exception {
   factory RoutingException(String message) => _RoutingExceptionImpl(message);
 
   /// Occurs when trying to resolve the parent of a [Route] without a parent.