diff --git a/configure.ac b/configure.ac
index 9981ab89..07e9690b 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, 3.1.0cvs, avrdude-dev@nongnu.org)
+AC_INIT(avrdude, 4.0.0, avrdude-dev@nongnu.org)
 
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST