diff --git a/man2/mprotect.2 b/man2/mprotect.2
index a03a9b121..23812c47a 100644
--- a/man2/mprotect.2
+++ b/man2/mprotect.2
@@ -206,8 +206,8 @@ would result in three mappings:
 two read/write mappings at each end and a read-only mapping in the middle.)
 .SH VERSIONS
 .BR pkey_mprotect ()
-first appeared in Linux 4.9.
-Glibc support is not yet available.
+first appeared in Linux 4.9;
+library support was added in glibc 2.27.
 .SH CONFORMING TO
 .BR mprotect ():
 POSIX.1-2001, POSIX.1-2008, SVr4.
diff --git a/man2/pkey_alloc.2 b/man2/pkey_alloc.2
index 858f64ce6..558fb403c 100644
--- a/man2/pkey_alloc.2
+++ b/man2/pkey_alloc.2
@@ -103,8 +103,8 @@ of available pkeys.
 .BR pkey_alloc ()
 and
 .BR pkey_free ()
-were added to Linux in kernel 4.9.
-Glibc support is not yet available.
+were added to Linux in kernel 4.9;
+library support was added in glibc 2.27.
 .SH CONFORMING TO
 The
 .BR pkey_alloc ()