diff --git a/UPDATING b/UPDATING
index 503ce096239..6ad89bbf660 100644
--- a/UPDATING
+++ b/UPDATING
@@ -17,6 +17,12 @@ and/or ports.
 	KAPI between the NFS modules.  Bump __FreeBSD_version to 1300514.
 	All NFS modules must be rebuilt from sources.
 
+20210730:
+	Commit b69019c14cd8 removes pf's DIOCGETSTATESNV ioctl.
+	As of be70c7a50d32 it is no longer used by userspace, but it does mean
+	users may not be able to enumerate pf states if they update the kernel
+	past c021ff986e2b without first updating userspace past be70c7a50d32.
+
 20210718:
 	Bump __FreeBSD_version to 1300512 after merging LinuxKPI, OFED,
 	net80211, and driver changes in order to support building