diff --git a/docs/source/conf.py b/docs/source/conf.py
index 4dddce1..0f0bda0 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -25,7 +25,7 @@
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = [ "sphinx.ext.autodoc", "sphinx.ext.mathjax", "sphinxcontrib.doxylink", "sphinxcontrib.aafig", "sphinxcontrib.googleanalytics" ]
+extensions = [ "sphinx.ext.autodoc", "sphinx.ext.mathjax", "sphinxcontrib.doxylink", "sphinxcontrib.aafig", "sphinxcontrib.googleanalytics", "sphinxcontrib.bibtex" ]
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']