diff --git a/docs/release_notes.rst b/docs/release_notes.rst
index 093b0824..e3eb3143 100644
--- a/docs/release_notes.rst
+++ b/docs/release_notes.rst
@@ -22,6 +22,10 @@ v11.4.0
 -  We now report on the progress of PDF/A conversion, since this operation is
    sometimes slow.
 -  Improved command line completions.
+-  The prefix of the temporary folder OCRmyPDF creates has been changed from
+   ``com.github.ocrmypdf`` to ``ocrmypdf.io``. Scripts that chose to depend on this
+   prefix may need to be adjusted. (This has always been an implementation detail so is
+   not considered part of the semantic versioning "contract".)
 -  Fixed issue #692, where a particular file with malformed fonts would flood an
    internal message cue by generating so many debug messages.
 -  Fixed an exception on processing hOCR files with no page record. Tesseract