diff --git a/lib/mm2ep_depend/version.rb b/lib/mm2ep_depend/version.rb
index 2328db4..92b6589 100644
--- a/lib/mm2ep_depend/version.rb
+++ b/lib/mm2ep_depend/version.rb
@@ -1,3 +1,3 @@
 module Mm2epDepend
-  VERSION = '0.8.3'.freeze
+  VERSION = '0.8.4-dev'.freeze
 end