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-rw-r--r--doc/source/conf.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 8c18e423a..2bafc50eb 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -22,6 +22,7 @@ sys.path.insert(0, os.path.abspath('../sphinxext'))
extensions = ['sphinx.ext.autodoc', 'sphinx.ext.pngmath', 'numpydoc',
'sphinx.ext.intersphinx', 'sphinx.ext.coverage',
'sphinx.ext.doctest', 'sphinx.ext.autosummary',
+ 'sphinx.ext.graphviz',
'matplotlib.sphinxext.plot_directive']
# Add any paths that contain templates here, relative to this directory.