diff --git a/doc/python-requirements.txt b/doc/python-requirements.txt
index 42d8ea92c..55a1238da 100644
--- a/doc/python-requirements.txt
+++ b/doc/python-requirements.txt
@@ -1,2 +1,3 @@
-numpy==1.8.1
-
+numpy
+numydoc
+breathe