diff --git a/ChangeLog b/ChangeLog
index 0b9db848..91e783f4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2013-05-08  Joerg Wunsch <j.gnu@uriah.heep.sax.de>
+
+	* configure.ac (AC_INIT): Bump version to 6.0rc1.
+
 2013-05-07  Hannes Weisbach <hannes_weisbach@gmx.net>
 
 	* avrftdi_private.h: Change size of pin_checklist to N_PINS (from N_PINS-1)
diff --git a/configure.ac b/configure.ac
index eca0e246..ea3fab81 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,7 +23,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.60)
-AC_INIT(avrdude, 5.11svn, avrdude-dev@nongnu.org)
+AC_INIT(avrdude, 6.0rc1, avrdude-dev@nongnu.org)
 
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST