diff --git a/RELEASE-NOTES-1.23 b/RELEASE-NOTES-1.23
index f07fbbb15e7..12451aa768d 100644
--- a/RELEASE-NOTES-1.23
+++ b/RELEASE-NOTES-1.23
@@ -229,6 +229,7 @@ changes to languages because of Bugzilla reports.
 * Thumbnails that keep failing to render in thumb.php will be rate-limited
   againt further render attempts for 1 hour. $wgAttemptFailureEpoch can be
   altered to reset all rate-limited thumbnails at once.
+* (bug 56572) Builds of the OOjs and OOjs UI libraries are now available.
 
 ==== Removed classes ====
 * FakeMemCachedClient (deprecated in 1.18)