diff --git a/doc/release/0.3.rst b/doc/release/0.3.rst
index 4f708df3f..4dd00b665 100644
--- a/doc/release/0.3.rst
+++ b/doc/release/0.3.rst
@@ -14,6 +14,7 @@ API Changes
 -----------
 #. Renaming ``structuredgrid.py`` to camelCase. (`PR#1650 <https://github.com/terrapower/armi/pull/1650>`_)
 #. Removing unused argument from ``Block.coords()``. (`PR#1651 <https://github.com/terrapower/armi/pull/1651>`_)
+#. Removing unused method ``HexGrid.allPositionsInThird()``. (`PR#1655 <https://github.com/terrapower/armi/pull/1655>`_)
 #. TBD
 
 Bug Fixes