diff --git a/Sconstruct b/Sconstruct
index 8e164aae..7910a6c5 100644
--- a/Sconstruct
+++ b/Sconstruct
@@ -1,7 +1,7 @@
 #!/usr/bin/python
 import os
 
-CONFIG_VERSION = "6.4.2"
+CONFIG_VERSION = "6.4.3-rc"
 
 
 # Set up default environment