Release version 3.13.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
diff --git a/NEWS b/NEWS
index ddf43ab..2853565 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,10 @@
+Version 3.13 - January 27, 2014
+
+	* Doc: Update GPL text to include current address of the FSF
+	* Fix: Spelling fixes
+	* Doc: Fix advertising flag values in manual page for 20G link modes,
+	  and add missing 1G, 10G and 40G link modes
+
 Version 3.12.1 - November 8, 2013
 
 	* Fix: Memory corruption when applying external calibration to
diff --git a/configure.ac b/configure.ac
index a06ee81..ac7977a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_INIT(ethtool, 3.12.1, netdev@vger.kernel.org)
+AC_INIT(ethtool, 3.13, netdev@vger.kernel.org)
 AC_PREREQ(2.52)
 AC_CONFIG_SRCDIR([ethtool.c])
 AM_INIT_AUTOMAKE([gnu])