diff --git a/python-matplotlib.spec b/python-matplotlib.spec
index 43c348f..875151d 100644
--- a/python-matplotlib.spec
+++ b/python-matplotlib.spec
@@ -43,6 +43,9 @@ BuildRequires:  pyparsing
 BuildRequires:  python-pycxx-devel
 BuildRequires:  python-dateutil
 BuildRequires:  python-setuptools
+%if %{with_html}
+BuildRequires:  python-numpydoc
+%endif
 BuildRequires:  python2-devel
 BuildRequires:  pytz
 BuildRequires:  xorg-x11-server-Xvfb