diff --git a/lib/mongo/version.rb b/lib/mongo/version.rb
index <HASH>..<HASH> 100644
--- a/lib/mongo/version.rb
+++ b/lib/mongo/version.rb
@@ -17,5 +17,5 @@ module Mongo
   # The current version of the driver.
   #
   # @since 2.0.0
-  VERSION = '2.4.0'.freeze
+  VERSION = '2.4.0.rc0'.freeze
 end
Update version to <I>.rc0