diff --git a/configure.ac b/configure.ac
index 3afc656d..6085b6e0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ dnl Process this file with autoconf to produce a configure script.
 # get rid of that stupid cache mechanism
 rm -f config.cache
 
-AC_INIT([terminology], [0.5.0], [enlightenment-devel@lists.sourceforge.net])
+AC_INIT([terminology], [0.5.99], [enlightenment-devel@lists.sourceforge.net])
 AC_PREREQ([2.60])
 AC_CONFIG_SRCDIR([configure.ac])
 AC_CONFIG_MACRO_DIR([m4])