begin work on v2.3.1
diff --git a/docs/conf.py b/docs/conf.py
index 868f960..d17e4ba 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -63,7 +63,7 @@
 # The short X.Y version.
 version = '2.3'
 # The full version, including alpha/beta/rc tags.
-release = '2.3.dev0'
+release = '2.3.dev1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.