--- pyproject.toml.orig	2025-07-02 15:55:37 UTC
+++ pyproject.toml
@@ -2,10 +2,10 @@ requires = [
 # These are strictly build requirements. Runtime requirements are listed in
 # INSTALL_REQUIRES in setup.py
 requires = [
-    "setuptools>=69.0.2",
+    "setuptools>=61.0.0",
     "cython>=3.0.10,<4",  # Sync with CYTHON_MIN_VER in setup
-    "numpy>=2.0.0,<3",
-    "scipy>=1.13,<2",
+    "numpy>=1.22.3,<3",
+    "scipy>=1.8,<2",
     "setuptools_scm[toml]>=8,<9"
 ]
 build-backend = "setuptools.build_meta"