diff --git a/configure.ac b/configure.ac
index b1430157..2f5681d4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,7 +12,7 @@
 #
 
 AC_PREREQ([2.69])
-AC_INIT([libxo],[1.5.1],[phil@juniper.net])
+AC_INIT([libxo],[1.6.0],[phil@juniper.net])
 AM_INIT_AUTOMAKE([-Wall -Werror foreign -Wno-portability])
 
 # Support silent build rules.  Requires at least automake-1.11.