diff --git a/man5/resolv.conf.5 b/man5/resolv.conf.5
index f5c8cad6c..7b6804a92 100644
--- a/man5/resolv.conf.5
+++ b/man5/resolv.conf.5
@@ -272,6 +272,13 @@ as if it were a top level domain (TLD).
 This option can cause problems if the site has ``localhost'' as a TLD
 rather than having localhost on one or more elements of the search list.
 This option has no effect if neither RES_DEFNAMES or RES_DNSRCH is set.
+.TP
+.BR use-vc " (since glibc 2.14)"
+sets
+.BR RES_USEVC
+in
+.IR _res.options .
+This option forces the usage of TCP for DNS resolutions.
 .RE
 .LP
 The \fIdomain\fP and \fIsearch\fP keywords are mutually exclusive.