diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d6bbeba..c7d43ff8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# 3.1.0
+* Add `Router.groupAsync`
+
 # 3.0.6
 * Remove static default values for `middleware`.
 
diff --git a/README.md b/README.md
index 067f7959..881e4448 100644
--- a/README.md
+++ b/README.md
@@ -64,6 +64,12 @@ main() {
         (r) => r.id == reviewId);
     });
   }, middleware: [put, middleware, here]);
+
+  // Grouping can also take async callbacks.
+  await router.groupAsync('/hello', (router) async {
+    var name = await getNameFromFileSystem();
+    router.get(name, (req, res) => '...');
+  });
 }
 ```
 
diff --git a/lib/src/router.dart b/lib/src/router.dart
index 0efb89f0..9d6e4f1c 100644
--- a/lib/src/router.dart
+++ b/lib/src/router.dart
@@ -1,18 +1,15 @@
 library angel_route.src.router;
 
+import 'dart:async';
 import 'package:combinator/combinator.dart';
 import 'package:meta/meta.dart';
 import 'package:string_scanner/string_scanner.dart';
 
 import '../string_util.dart';
 import 'routing_exception.dart';
-
 part 'grammar.dart';
-
 part 'route.dart';
-
 part 'routing_result.dart';
-
 part 'symlink_route.dart';
 
 //final RegExp _param = RegExp(r':([A-Za-z0-9_]+)(\((.+)\))?');
@@ -175,6 +172,16 @@ class Router<T> {
     return mount(path, router)..name = name;
   }
 
+  /// Asynchronous equivalent of [group].
+  Future<SymlinkRoute<T>> groupAsync(
+      String path, FutureOr<void> callback(Router<T> router),
+      {Iterable<T> middleware, String name}) async {
+    middleware ??= <T>[];
+    final router = Router<T>().._middleware.addAll(middleware);
+    await callback(router);
+    return mount(path, router)..name = name;
+  }
+
   /// Generates a URI string based on the given input.
   /// Handy when you have named routes.
   ///
@@ -425,6 +432,16 @@ class _ChainedRouter<T> extends Router<T> {
     return mount(path, router)..name = name;
   }
 
+  @override
+  Future<SymlinkRoute<T>> groupAsync(
+      String path, FutureOr<void> callback(Router<T> router),
+      {Iterable<T> middleware, String name}) async {
+    final router = _ChainedRouter<T>(
+        _root, []..addAll(_handlers)..addAll(middleware ?? []));
+    await callback(router);
+    return mount(path, router)..name = name;
+  }
+
   @override
   SymlinkRoute<T> mount(String path, Router<T> router) {
     final route = super.mount(path, router);
diff --git a/pubspec.yaml b/pubspec.yaml
index f2d0a3ae..4c243b8e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: angel_route
 description: A powerful, isomorphic routing library for Dart. It is mainly used in the Angel framework, but can be used in Flutter and on the Web.
-version: 3.0.6
+version: 3.1.0
 author: Tobe O <thosakwe@gmail.com>
 homepage: https://github.com/angel-dart/angel_route
 environment: