diff --git a/CHANGELOG.md b/CHANGELOG.md
index cee64c308..790a54c27 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 ### Documentation and tutorial enhancements
 - Simplified the introduction to NWB tutorial. @rly [#1914](https://github.com/NeurodataWithoutBorders/pynwb/pull/1914)
 - Simplified the ecephys and ophys tutorials. [#1915](https://github.com/NeurodataWithoutBorders/pynwb/pull/1915)
+- Add comments to `src/pynwb/io/file.py` to improve developer documentation. @rly [#1925](https://github.com/NeurodataWithoutBorders/pynwb/pull/1925)
 
 ### Bug fixes
 - Fixed use of `channel_conversion` in `TimeSeries` `get_data_in_units`. @rohanshah [1923](https://github.com/NeurodataWithoutBorders/pynwb/pull/1923)