diff --git a/RELEASE_NOTES.rst b/RELEASE_NOTES.rst
index 3d2bda71a..0a17411af 100644
--- a/RELEASE_NOTES.rst
+++ b/RELEASE_NOTES.rst
@@ -30,7 +30,9 @@ Release notes
 * Results are still saved when ``analyze`` raises an exception.
 * ``LinearScan`` and ``RandomScan`` have been consolidated into RangeScan.
 * The Pipistrello is no longer supported. For a low-cost ARTIQ setup, use either
-  ARTIQ 2.x with Pipistrello, or the future ARTIQ 4.x with Kasli.
+  ARTIQ 2.x with Pipistrello, or the future ARTIQ 4.x with Kasli. Note that the
+  Pipistrello board has also been discontinued by the manufacturer but its design
+  files are freely available.
 * The device database is now generated by an executable Python script. To migrate
   an existing database, add ``device_db = `` at the beginning, and replace any PYON
   identifiers (``true``, ``null``, ...) with their Python equivalents