Use "numpy >= 1.16.0, < 2.0" to fix #25636
diff --git a/tensorflow/tools/pip_package/setup.py b/tensorflow/tools/pip_package/setup.py
index 28f31b2..d8cbfe7 100644
--- a/tensorflow/tools/pip_package/setup.py
+++ b/tensorflow/tools/pip_package/setup.py
@@ -53,7 +53,7 @@
     'gast >= 0.2.0',
     'keras_applications >= 1.0.6',
     'keras_preprocessing >= 1.0.5',
-    'numpy >= 1.13.3',
+    'numpy >= 1.16.0, < 2.0',
     'six >= 1.10.0',
     'protobuf >= 3.6.1',
     'tensorboard >= 1.13.0, < 1.14.0',