diff --git a/CHANGELOG.md b/CHANGELOG.md
index aaebe7ad..68e9833c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Change signature of `PyTypeObject::type_object()` - now takes `Python` argument and returns `&PyType`. [#970](https://github.com/PyO3/pyo3/pull/970)
 - Change return type of `PyTuple::slice()` and `PyTuple::split_from()` from `Py<PyTuple>` to `&PyTuple`. [#970](https://github.com/PyO3/pyo3/pull/970)
 - Change return type of `PyTuple::as_slice` to `&[&PyAny]`. [#971](https://github.com/PyO3/pyo3/pull/971)
+- Update `num-complex` optional dependendency from `0.2` to `0.3`. [#977](https://github.com/PyO3/pyo3/pull/977)
+- Update `num-bigint` optional dependendency from `0.2` to `0.3`. [#978](https://github.com/PyO3/pyo3/pull/978)
 
 ### Removed
 - Remove `ManagedPyRef` (unused, and needs specialization) [#930](https://github.com/PyO3/pyo3/pull/930)