diff --git a/tests/requirements/base.txt b/tests/requirements/base.txt
index c89533b0dfdb4..11e47fc64d3df 100644
--- a/tests/requirements/base.txt
+++ b/tests/requirements/base.txt
@@ -1,6 +1,6 @@
 docutils
 Markdown
-numpy
+numpy < 1.9
 PIL
 py-bcrypt
 python-memcached