diff --git a/man5/proc.5 b/man5/proc.5
index 9ae9e02..dc83c22 100644
--- a/man5/proc.5
+++ b/man5/proc.5
@@ -2262,6 +2262,7 @@ CapBnd: ffffffffffffffff
 CapAmb:	0000000000000000
 NoNewPrivs:     0
 Seccomp:        0
+Speculation_Store_Bypass:       vulnerable
 Cpus_allowed:   00000001
 Cpus_allowed_list:      0
 Mems_allowed:   1
@@ -2485,6 +2486,12 @@ This field is provided only if the kernel was built with the
 .BR CONFIG_SECCOMP
 kernel configuration option enabled.
 .IP *
+.IR Speculation_Store_Bypass :
+.\" commit fae1fa0fc6cca8beee3ab8ed71d54f9a78fa3f64
+Speculation flaw mitigation state
+(since Linux 4.17, see
+.BR prctl (2)).
+.IP *
 .IR Cpus_allowed :
 Mask of CPUs on which this process may run
 (since Linux 2.6.24, see