diff --git a/docs/release_notes.rst b/docs/release_notes.rst
index 736e35d4..e8979637 100644
--- a/docs/release_notes.rst
+++ b/docs/release_notes.rst
@@ -16,6 +16,12 @@ Note that it is licensed under GPLv3, so scripts that
 ``import ocrmypdf`` and are released publicly should probably also be
 licensed under GPLv3.
 
+v10.3.3
+=======
+
+-  Fixed a "KeyError: 'dpi'" error message when using ``--threshold`` on an image.
+   (#607)
+
 v10.3.2
 =======