diff --git a/man7/cgroups.7 b/man7/cgroups.7
index 6ff961848..d43bba504 100644
--- a/man7/cgroups.7
+++ b/man7/cgroups.7
@@ -548,6 +548,7 @@ This pathname is relative to the mount point of the hierarchy.
 .BR ioprio_set (2),
 .BR perf_event_open (2),
 .BR setrlimit (2),
+.BR cgroup_namespaces (7),
 .BR cpuset (7),
 .BR namespaces (7),
 .BR sched (7),