Bump the libtool revision
diff --git a/configure.ac b/configure.ac
index d48b83b..11d1556 100644
--- a/configure.ac
+++ b/configure.ac
@@ -72,11 +72,11 @@
dnl bump revision when fixing bugs
dnl bump current and age, reset revision to zero when adding APIs
dnl bump current, leave age, reset revision to zero when changing/removing APIS
-LIBT_CURRENT=12
-LIBT_REVISION=1
+LIBT_CURRENT=13
+LIBT_REVISION=0
AC_SUBST(LIBT_CURRENT)
AC_SUBST(LIBT_REVISION)
-LIBT_AGE=11
+LIBT_AGE=12
LIBT_VERSION_INFO="$LIBT_CURRENT:$LIBT_REVISION:$LIBT_AGE"
AC_SUBST(LIBT_VERSION_INFO)
