diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5f27d46c..db3534e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,8 +13,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
  * `py_run!` macro [#512](https://github.com/PyO3/pyo3/pull/512)
  * Use existing fields and methods before calling custom __getattr__. [#505](https://github.com/PyO3/pyo3/pull/512)
  * `PyBytes` can now be indexed just like `Vec<u8>`
+ * Implement `IntoPyObject` for `PyRef` and `PyRefMut`.
 
-## Removed 
+## Removed
 
  * `#[pyclass(subclass)]` is hidden a `unsound-subclass` feature because it's causing segmentation faults.