diff --git a/setup.py b/setup.py
index 5783e99de0..9d7f6abb2d 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@
 __version__ = version["__version__"]
 
 install_requires = [
-    "NumPy>=1.17",
+    "NumPy>=1.17,<2",
 ]