diff --git a/ci/requirements-3.6.build b/ci/requirements-3.6.build
index 8d09e0ee93070..1c4b46aea3865 100644
--- a/ci/requirements-3.6.build
+++ b/ci/requirements-3.6.build
@@ -2,5 +2,5 @@ python=3.6*
 python-dateutil
 pytz
 nomkl
-numpy=1.12*
+numpy
 cython
diff --git a/ci/requirements-3.6_DOC.build b/ci/requirements-3.6_DOC.build
index 37faaa7e4db88..bdcfe28105866 100644
--- a/ci/requirements-3.6_DOC.build
+++ b/ci/requirements-3.6_DOC.build
@@ -1,5 +1,5 @@
 python=3.6*
 python-dateutil
 pytz
-numpy=1.12*
+numpy
 cython