diff --git a/embassy-sync/CHANGELOG.md b/embassy-sync/CHANGELOG.md
index 7a830a853..1e85e24c3 100644
--- a/embassy-sync/CHANGELOG.md
+++ b/embassy-sync/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add `capacity`, `free_capacity`, `len`, `is_empty` and `is_full` functions to `Channel`.
 - Add `capacity`, `free_capacity`, `len`, `is_empty` and `is_full` functions to `PriorityChannel`.
 - Add `capacity`, `free_capacity`, `len`, `is_empty` and `is_full` functions to `PubSubChannel`.
+- Made `PubSubBehavior` sealed
 
 ## 0.5.0 - 2023-12-04