diff --git a/ChangeLog b/ChangeLog
index d6a2bcb1..e71cecc5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2011-08-27  Joerg Wunsch <j.gnu@uriah.heep.sax.de>
+
+	* configure.ac: Bump version for post-5.11.
+
 2011-08-27  Joerg Wunsch <j.gnu@uriah.heep.sax.de>
 
 	* configure.ac: Bump version for releasing AVRDUDE 5.11.
diff --git a/configure.ac b/configure.ac
index b5ba7cf8..58aa8cc4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,7 +24,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.57)
-AC_INIT(avrdude, 5.11, avrdude-dev@nongnu.org)
+AC_INIT(avrdude, 5.11cvs, avrdude-dev@nongnu.org)
 
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST