diff --git a/lib/rdoc/version.rb b/lib/rdoc/version.rb
index 442c3fbb10807b..87842d9847a9ee 100644
--- a/lib/rdoc/version.rb
+++ b/lib/rdoc/version.rb
@@ -5,6 +5,6 @@ module RDoc
   ##
   # RDoc version you are using
 
-  VERSION = '6.6.3'
+  VERSION = '6.6.3.1'
 
 end