diff --git a/configure.in b/configure.in
index 9fe4ded1..5dc04f94 100644
--- a/configure.in
+++ b/configure.in
@@ -1,7 +1,7 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_REVISION ($Revision$)
 AC_PREREQ(2.50)
-AC_INIT(nagios-plugins,1.3.99)
+AC_INIT(nagios-plugins,1.4.0alpha1)
 AC_CONFIG_SRCDIR(Helper.pm)
 AM_INIT_AUTOMAKE
 AC_CONFIG_HEADER(config.h)