diff --git a/man5/proc.5 b/man5/proc.5
index c6bc6b67e..a958c758b 100644
--- a/man5/proc.5
+++ b/man5/proc.5
@@ -5338,10 +5338,12 @@ This read-only file exposes a list of all currently pending
 (high-resolution) timers,
 all clock-event sources, and their parameters in a human-readable form.
 .TP
-.IR /proc/timer_stats " (since Linux 2.6.21)"
+.IR /proc/timer_stats " (since Linux 2.6.21, before Linux 4.11)"
 .\" commit 82f67cd9fca8c8762c15ba7ed0d5747588c1e221
 .\"	Date:   Fri Feb 16 01:28:13 2007 -0800
 .\" Text largely derived from Documentation/timers/timer_stats.txt
+.\" removed in commit dfb4357da6ddbdf57d583ba64361c9d792b0e0b1
+.\"     Date:   Wed Feb 8 11:26:59 2017 -0800
 This is a debugging facility to make timer (ab)use in a Linux
 system visible to kernel and user-space developers.
 It can be used by kernel and user-space developers to verify that
@@ -5435,6 +5437,10 @@ the function where the timer was initialized; and
 (in parentheses)
 the callback function that is associated with the timer.
 .RE
+.IP
+During the Linux 4.11 development cycle this functionality has been removed,
+as it exposes information across namespaces, and there is possibility to obtain
+the same information via in-kernel tracing facilities such as ftrace.
 .TP
 .I /proc/tty
 Subdirectory containing the pseudo-files and subdirectories for