diff --git a/lib/logstash/version.rb b/lib/logstash/version.rb
index 7648fdc33..dcc0d363d 100644
--- a/lib/logstash/version.rb
+++ b/lib/logstash/version.rb
@@ -1,6 +1,6 @@
 # encoding: utf-8
 # The version of logstash.
-LOGSTASH_VERSION = "1.4.0"
+LOGSTASH_VERSION = "1.4.1.dev"
 
 # Note to authors: this should not include dashes because 'gem' barfs if
 # you include a dash in the version string.