diff --git a/CHANGELOG-unreleased.md b/CHANGELOG-unreleased.md
index 4ab29ea3d..1926daf55 100644
--- a/CHANGELOG-unreleased.md
+++ b/CHANGELOG-unreleased.md
@@ -22,6 +22,11 @@ the released changes.
 - `add_param` returns the name of the parameter (useful for numbered parameters)
 - `introduces_dm_errors` class attribute in `NoiseComponent`s to distinguish DM noise
 - Simulate correlated DM noise for wideband TOAs
+- Abstract base classes `WhiteNoiseComponent` and `CorrelatedNoiseComponent`
+- `get_dm_noise_basis` and `get_wideband_noise_basis` methods in `CorrelatedNoiseComponent`s
+- `scaled_wideband_uncertainty`, `noise_model_wideband_designmatrix`, `dm_designmatrix`, `wideband_designmatrix`,  `full_designmatrix`, and `full_basis_weight` methods in `TimingModel`
+- `get_wideband_errors` method in `TOAs`
+- `calc_combined_resids` method in `WidebandTOAResiduals`
 - Rerun intermittent failures in CI
 - micromamba CI environment for testing macOS-latest, without tox
 ### Fixed