diff --git a/src/sphinx/conf.py b/src/sphinx/conf.py
index a7e92fc7f..24062ef50 100644
--- a/src/sphinx/conf.py
+++ b/src/sphinx/conf.py
@@ -9,7 +9,7 @@ extensions = ['sphinxcontrib.issuetracker', 'sphinx.ext.extlinks', 'howto']
 
 project = 'sbt'
 version = '0.13'
-release = '0.13.0'
+release = '0.13.0-Beta1'
 scalaVersion = "2.10"
 scalaRelease = "2.10.2"