diff --git a/lib/mm2ep_depend/version.rb b/lib/mm2ep_depend/version.rb
index 73d27c3..bec0f2e 100644
--- a/lib/mm2ep_depend/version.rb
+++ b/lib/mm2ep_depend/version.rb
@@ -1,3 +1,3 @@
 module Mm2epDepend
-  VERSION = '0.9.0'.freeze
+  VERSION = '0.9.1-dev'.freeze
 end