diff --git a/pyproject.toml b/pyproject.toml
index c3479b5c6..f27a28bf4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,5 +3,16 @@ requires = [
     "setuptools",
     "versioneer", 
     "wheel",
-    "oldest-supported-numpy"
+    "oldest-supported-numpy ; python_version < '3.9'",
+    # Comments on numpy build requirement range:
+    #
+    #   1. >=2.0.x is the numpy requirement for wheel builds for distribution
+    #      on PyPI - building against 2.x yields wheels that are also
+    #      ABI-compatible with numpy 1.x at runtime.
+    #   2. Note that building against numpy 1.x works fine too - users and
+    #      redistributors can do this by installing the numpy version they like
+    #      and disabling build isolation.
+    #   3. The <2.3 upper bound is for matching the numpy deprecation policy,
+    #      it should not be loosened
+    "numpy>=2.0.0rc1<2.3 ; python_version >= '3.9'",
 ]
diff --git a/setup.py b/setup.py
index c6d8fee4d..222a1b6e2 100644
--- a/setup.py
+++ b/setup.py
@@ -196,7 +196,10 @@ def get_long_description():
     install_requires=["numpy"],
     extras_require={"doc": ["numpydoc", "sphinx", "gitpython"]},
     cmdclass=cmdclass,
-    setup_requires=["numpy"],
+    setup_requires=[
+        "oldest-supported-numpy ; python_version < '3.9'",
+        "numpy>=2.0.0rc1 ; python_version >= '3.9'"
+    ],
     ext_modules=prepare_modules(),
     zip_safe=False,
 )