diff --git a/configure.ac b/configure.ac
index 8b54858da3..c56c70f7a6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,8 +2,8 @@ AC_PREREQ([2.63])
 
 dnl The NM version number
 m4_define([nm_major_version], [1])
-m4_define([nm_minor_version], [5])
-m4_define([nm_micro_version], [91])
+m4_define([nm_minor_version], [6])
+m4_define([nm_micro_version], [0])
 m4_define([nm_version],
           [nm_major_version.nm_minor_version.nm_micro_version])