diff --git a/docs/mk-ca-bundle.1 b/docs/mk-ca-bundle.1
index bc0ba2a31..1c43c1a2a 100644
--- a/docs/mk-ca-bundle.1
+++ b/docs/mk-ca-bundle.1
@@ -5,7 +5,7 @@
 .\" *                            | (__| |_| |  _ <| |___
 .\" *                             \___|\___/|_| \_\_____|
 .\" *
-.\" * Copyright (C) 2008 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 2008 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
 .\" *
 .\" * This software is licensed as described in the file COPYING, which
 .\" * you should have received as part of this distribution. The terms
@@ -20,7 +20,7 @@
 .\" *
 .\" **************************************************************************
 .\"
-.TH mk-ca-bundle 1 "5 Jan 2013" "version 1.17" "mk-ca-bundle manual"
+.TH mk-ca-bundle 1 "5 Jan 2013" "version 1.20" "mk-ca-bundle manual"
 .SH NAME
 mk-ca-bundle \- convert mozilla's certdata.txt to PEM format
 .SH SYNOPSIS
@@ -42,6 +42,10 @@ curl, wget and more.
 The following options are supported:
 .IP -b
 backup an existing version of \fIoutputfilename\fP
+.IP -d [name]
+specify which Mozilla tree to pull certdata.txt from (or a custom URL). Valid
+names are: aurora, beta, central, mozilla, nss, release (default). They are
+shortcuts for which source tree to get the cert data from.
 .IP -f
 force rebuild even if certdata.txt is current (Added in version 1.17)
 .IP -i