diff --git a/doc/sphinx/source/conf.py b/doc/sphinx/source/conf.py
index b668972..743c5f3 100644
--- a/doc/sphinx/source/conf.py
+++ b/doc/sphinx/source/conf.py
@@ -13,6 +13,7 @@
 
 import sys, os
 import obitools
+import obitools.version
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the