diff --git a/lib/racc/info.rb b/lib/racc/info.rb
index a6bd249c..dcce9b93 100644
--- a/lib/racc/info.rb
+++ b/lib/racc/info.rb
@@ -12,7 +12,7 @@
 #++
 
 module Racc
-  VERSION   = '1.7.1'
+  VERSION   = '1.7.2.dev.1'
   Version = VERSION
   Copyright = 'Copyright (c) 1999-2006 Minero Aoki'
 end