diff -ruN /usr/ports.orig/GIDs /usr/ports/GIDs
--- /usr/ports.orig/GIDs	2016-09-04 09:00:59.801437528 +0000
+++ /usr/ports/GIDs	2016-09-04 09:08:31.755422835 +0000
@@ -493,7 +493,7 @@
 # free: 549
 # free: 550
 # free: 551
-# free: 552
+kresd:*:552:
 knot:*:553:
 qtss:*:554:
 ircdru:*:555:
diff -ruN /usr/ports.orig/UIDs /usr/ports/UIDs
--- /usr/ports.orig/UIDs	2016-09-04 09:01:24.718458178 +0000
+++ /usr/ports/UIDs	2016-09-04 09:10:21.396414675 +0000
@@ -498,7 +498,7 @@
 # free: 549
 # free: 550
 # free: 551
-# free: 552
+kresd:*:552:552::0:0:Knot Resolver:/nonexistent:/usr/sbin/nologin
 knot:*:553:553::0:0:Knot DNS Server:/nonexistent:/usr/sbin/nologin
 qtss:*:554:554::0:0:Darwin Streaming Server:/nonexistent:/usr/sbin/nologin
 ircdru:*:555:555::0:0:Russian hybrid IRC server:/nonexistent:/bin/sh