diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0a19672..73302b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 1.3.1 - Oct 6, 2020
+
+-   Add extension for `Iterable<Sink>` and `Iterable<StreamSubscription>`.
+-   Update docs.
+
 ## 1.3.0 - Sep 29, 2020
 
 -   Bugfix: `Uncaught Error: Bad state: Cannot add event after closing`.
diff --git a/README.md b/README.md
index 5a47dc9..7ec9f03 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,44 @@ main() async {
 }
 ```
 
+### API
+
+## 1. Add, addAll
+
+```dart
+Future<bool> DisposeBag.add(StreamSubscription);
+Future<bool> DisposeBag.add(Sink);
+Future<bool> DisposeBag.addAll(Iterable<StreamSubscription>);
+Future<bool> DisposeBag.addAll(Iterable<Sink>);
+
+// extension methods
+Future<bool> StreamSubscription.disposedBy(DisposeBag);
+Future<bool> Sink.disposedBy(DisposeBag);
+Future<bool> Iterable<StreamSubscription>.disposedBy(DisposeBag);
+Future<bool> Iterable<Sink>.disposedBy(DisposeBag);
+```
+
+## 2. Delete (removes but does not dispose)
+
+```dart
+Future<bool> delete(StreamSubscription);
+Future<bool> delete(Sink);
+```
+
+## 3. Remove (removes and disposes)
+
+```dart
+Future<bool> remove(StreamSubscription);
+Future<bool> remove(Sink);
+```
+
+## 4. Clear, dispose
+
+```dart
+Future<bool> clear();
+Future<bool> dispose();
+```
+
 ## Features and bugs
 
 Please file feature requests and bugs at the [issue tracker][tracker].
diff --git a/pubspec.yaml b/pubspec.yaml
index e44be95..c141a2a 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: disposebag
 description: A package to help disposing Streams and closing Sinks easily.
-version: 1.3.0
+version: 1.3.1
 homepage: https://github.com/hoc081098/disposebag.git
 repository: https://github.com/hoc081098/disposebag.git
 issue_tracker: https://github.com/hoc081098/disposebag/issues