diff --git a/doc/en/Makefile b/doc/en/Makefile
index 17fab6115..7a05008ac 100644
--- a/doc/en/Makefile
+++ b/doc/en/Makefile
@@ -12,7 +12,7 @@ PAPEROPT_a4     = -D latex_paper_size=a4
 PAPEROPT_letter = -D latex_paper_size=letter
 ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
 
-SITETARGET=latest
+SITETARGET=dev
 
 .PHONY: help clean html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf text man changes linkcheck doctest
 
diff --git a/doc/en/conf.py b/doc/en/conf.py
index f9fa0a4e7..ee0559754 100644
--- a/doc/en/conf.py
+++ b/doc/en/conf.py
@@ -17,7 +17,7 @@
 #
 # The full version, including alpha/beta/rc tags.
 # The short X.Y version.
-version = release = "2.3.5"
+version = release = "2.4.0.dev"
 
 import sys, os