diff --git a/lib/fluent/version.rb b/lib/fluent/version.rb
index 39588e4620..3f18e80694 100644
--- a/lib/fluent/version.rb
+++ b/lib/fluent/version.rb
@@ -16,6 +16,6 @@
 
 module Fluent
 
-  VERSION = '0.14.21'
+  VERSION = '0.14.22.rc1'
 
 end