diff --git a/contrib/groff/tmac/doc-common b/contrib/groff/tmac/doc-common
index 5730ce6581f..8e6a737fab1 100644
--- a/contrib/groff/tmac/doc-common
+++ b/contrib/groff/tmac/doc-common
@@ -390,6 +390,7 @@
 .ds doc-operating-system-NetBSD-1.3a 1.3A
 .ds doc-operating-system-NetBSD-1.4  1.4
 .ds doc-operating-system-NetBSD-1.5  1.5
+.ds doc-operating-system-NetBSD-1.6  1.6
 .
 .ds doc-operating-system-FreeBSD-1.0     1.0
 .ds doc-operating-system-FreeBSD-1.1     1.1
@@ -419,6 +420,8 @@
 .ds doc-operating-system-FreeBSD-4.1.1   4.1.1
 .ds doc-operating-system-FreeBSD-4.2     4.2
 .ds doc-operating-system-FreeBSD-4.3     4.3
+.ds doc-operating-system-FreeBSD-4.4     4.4
+.ds doc-operating-system-FreeBSD-4.5     4.5
 .ds doc-operating-system-FreeBSD-5.0     5.0
 .
 .de Os
diff --git a/contrib/groff/tmac/doc-syms b/contrib/groff/tmac/doc-syms
index 5cf30ee9df2..f4d3d6e7813 100644
--- a/contrib/groff/tmac/doc-syms
+++ b/contrib/groff/tmac/doc-syms
@@ -562,6 +562,8 @@
 .als doc-str-St--iso9945-1-96 doc-str-St--p1003.1-96
 .ds doc-str-St--p1003.1g-2000  \*[doc-Tn-font-size]\%IEEE\*[doc-str-St] Std 1003.1g-2000
 .as doc-str-St--p1003.1g-2000  " (\*[Lq]\)\*[Px]\*[doc-str-St].1\*[Rq])
+.ds doc-str-St--p1003.1-2001   \*[doc-Tn-font-size]\%IEEE\*[doc-str-St] Std 1003.1-2001
+.as doc-str-St--p1003.1-2001   " (\*[Lq]\)\*[Px]\*[doc-str-St].1\*[Rq])
 .
 .\" POSIX Part 2: Shell and Utilities
 .ds doc-str-St--p1003.2        \*[doc-Tn-font-size]\%IEEE\*[doc-str-St] Std 1003.2