diff --git a/docs/conf.py b/docs/conf.py
index 1643dd572..36e4f2f10 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -58,9 +58,9 @@ copyright = "2017, " + author
 # built documents.
 #
 # The short X.Y version.
-version = "11.2"
+version = "12.1"
 # The full version, including alpha/beta/rc tags.
-release = "11.2.0"
+release = "12.1-dev"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.