diff --git a/lib/mongoid/enum/version.rb b/lib/mongoid/enum/version.rb
index 1864792..0067529 100644
--- a/lib/mongoid/enum/version.rb
+++ b/lib/mongoid/enum/version.rb
@@ -1,5 +1,5 @@
 module Mongoid
   module Enum
-    VERSION = "0.3.0"
+    VERSION = "0.4.0"
   end
 end