diff -r 7225c844bdc5 -r dc48952c383d setup.py
--- a/setup.py	Tue Feb 27 18:41:06 2018 +0200
+++ b/setup.py	Wed Feb 28 12:04:10 2018 +0200
@@ -52,6 +52,7 @@
           "numpy",
           "matplotlib",
           "sphinx",
+          "numpydoc",
           "pytz",
           "pyyaml",
       ],