Update documentation

vidursatija · web-flow · commit 72d9c92b2206 · 2017-03-25T00:31:37.000+05:30
diff --git a/doc/devel/documenting_mpl.rst b/doc/devel/documenting_mpl.rst
@@ -12,12 +12,13 @@ The documentation for matplotlib is generated from ReStructured Text using the
 Sphinx_ documentation generation tool.
 The requirements are as follows (https://github.com/matplotlib/matplotlib/blob/master/doc-requirements.txt)
 
-1. Sphinx-1.0 or later(Version 1.5.0 is not supported)
+1. Sphinx-1.3 or later(Version 1.5.0 is not supported)
 2. numpydoc 0.4 or later
 3. IPython
 4. Mock
 5. colorspacious
 6. pillow
+7. graphviz
 
 
 The documentation sources are found in the :file:`doc/` directory in
