diff --git a/requirements/tests.txt b/requirements/tests.txt
index 4451d4f..2703fa3 100644
--- a/requirements/tests.txt
+++ b/requirements/tests.txt
@@ -2,4 +2,4 @@
 pytest
 # pytest-xdist  # for --boxed  # dropping this because of compat req with six...
 hypothesis
-numpy
+numpy==1.14.2