diff --git a/test/method/all_tests.dart b/test/method/all_tests.dart
index f53df068..c8cad39a 100644
--- a/test/method/all_tests.dart
+++ b/test/method/all_tests.dart
@@ -114,7 +114,7 @@ main() {
 
   test('flatten', () {
     router.dumpTree(header: 'BEFORE FLATTENING:');
-    final flat = router.flatten();
+    final flat = router..flatten();
 
     for (Route route in flat.root.children) {
       print('${route.method} ${route.path} => ${route.matcher.pattern}');
diff --git a/test/router/all_tests.dart b/test/router/all_tests.dart
index 70544dc4..0343d4ef 100644
--- a/test/router/all_tests.dart
+++ b/test/router/all_tests.dart
@@ -37,7 +37,7 @@ main() {
     expect(lower.resolve('../upper').path, equals('letter/:id/upper'));
     expect(lower.resolve('/user/34/detail'), equals(deleteUserById));
     expect(deleteUserById.resolve('../../fizz'), equals(fizz));
-  });
+  }, skip: 'Hierarchy is deprecated.');
 
   test('resolve', () {
     expect(router.resolveOnRoot('/'), equals(indexRoute));