diff --git a/documentation/conf.py b/documentation/conf.py
index 8f5943a..7420982 100644
--- a/documentation/conf.py
+++ b/documentation/conf.py
@@ -45,9 +45,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '2.4'
+version = '2.5'
 # The full version, including alpha/beta/rc tags.
-release = '2.4'
+release = '2.5 preview'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.