diff --git a/CHANGELOG.md b/CHANGELOG.md
index b3ac5c3..b94b4f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,23 @@
 
 <!-- <START NEW CHANGELOG ENTRY> -->
 
+## 0.9.0
+
+([Full Changelog](https://github.com/y-crdt/ypy-websocket/compare/v0.8.4...69cbc95f011e29418cd2c0904245db16b7b0fb64))
+
+### Merged PRs
+
+- Use anyio instead of aiofiles [#72](https://github.com/y-crdt/ypy-websocket/pull/72) ([@davidbrochart](https://github.com/davidbrochart))
+- Add license, URLs, classifiers [#71](https://github.com/y-crdt/ypy-websocket/pull/71) ([@davidbrochart](https://github.com/davidbrochart))
+
+### Contributors to this release
+
+([GitHub contributors page for this release](https://github.com/y-crdt/ypy-websocket/graphs/contributors?from=2023-02-21&to=2023-04-06&type=c))
+
+[@davidbrochart](https://github.com/search?q=repo%3Ay-crdt%2Fypy-websocket+involves%3Adavidbrochart+updated%3A2023-02-21..2023-04-06&type=Issues)
+
+<!-- <END NEW CHANGELOG ENTRY> -->
+
 ## 0.8.4
 
 ([Full Changelog](https://github.com/y-crdt/ypy-websocket/compare/v0.8.3...7b7f66d380e5ff02d4dceb51d5a16bd6fc3adc76))
@@ -16,8 +33,6 @@
 
 [@davidbrochart](https://github.com/search?q=repo%3Ay-crdt%2Fypy-websocket+involves%3Adavidbrochart+updated%3A2023-02-20..2023-02-21&type=Issues)
 
-<!-- <END NEW CHANGELOG ENTRY> -->
-
 ## 0.8.3
 
 ([Full Changelog](https://github.com/y-crdt/ypy-websocket/compare/v0.8.2...f0851d01bd7143bf5b94a0dbf90120aac0bd2800))
diff --git a/ypy_websocket/__init__.py b/ypy_websocket/__init__.py
index 03c4993..6bf5378 100644
--- a/ypy_websocket/__init__.py
+++ b/ypy_websocket/__init__.py
@@ -2,4 +2,4 @@
 from .websocket_server import WebsocketServer, YRoom  # noqa
 from .yutils import YMessageType  # noqa
 
-__version__ = "0.8.4"
+__version__ = "0.9.0"