diff --git a/man2/syscalls.2 b/man2/syscalls.2
index 6610631ad..f2482acb1 100644
--- a/man2/syscalls.2
+++ b/man2/syscalls.2
@@ -144,7 +144,7 @@ into a 2.4.x release after 2.4.15.
 When this is so, the version where the system call appeared
 in both of the major kernel series is listed.
 .PP
-The list of system calls that are available as at kernel 4.5
+The list of system calls that are available as at kernel 4.9
 (or in a few cases only on older kernels) is as follows:
 .\"
 .\" Looking at scripts/checksyscalls.sh in the kernel source is
@@ -403,6 +403,9 @@ T}
 \fBpipe\fP(2)	1.0
 \fBpipe2\fP(2)	2.6.27
 \fBpivot_root\fP(2)	2.4
+\fBpkey_alloc\fP(2)	4.8
+\fBpkey_free\fP(2)	4.8
+\fBpkey_mprotect\fP(2)	4.8
 \fBpoll\fP(2)	2.0.36; 2.2
 \fBppc_rtas\fP(2)	2.6.2	PowerPC only
 \fBppoll\fP(2)	2.6.16