diff --git a/configure.ac b/configure.ac
index 9e26a832..b8770f2c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
-AC_INIT([kbd],[2.5.1],[gladkov.alexey@gmail.com],[],[https://kbd-project.org/])
+AC_INIT([kbd],[2.6-rc1],[gladkov.alexey@gmail.com],[],[https://kbd-project.org/])
 
 AC_PREREQ([2.69])