diff --git a/pyproject.toml b/pyproject.toml
index e00b3fb8..3d2f9107 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 requires = [
     "setuptools>=42",
     "wheel",
-    "numpy>=1.10.0",
+    "numpy>=1.10.0,<2.0.0",
     "pybind11>=2.0",
 ]