diff --git a/python/setup.py b/python/setup.py
index b1c825d84d5..51eb40af088 100755
--- a/python/setup.py
+++ b/python/setup.py
@@ -449,7 +449,7 @@ def has_ext_modules(foo):
 
 
 install_requires = (
-    'numpy >= 1.16.6',
+    'numpy >= 1.16.6, <2',
 )