diff --git a/CHANGELOG.md b/CHANGELOG.md
index 20e9594..8c4b786 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,14 @@ The format is based on [Keep a
 Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 1.0.4 - 2023-04-02
+
+### Fixed
+
+- Added the `join_ref` to the `phx_leave` message.
+    - This fixes compatibility with Phoenix 1.6.16+ when using
+      `Slipstream.leave/2`.
+
 ## 1.0.3 - 2023-03-06
 
 ### Fixed