diff --git a/pyproject.toml b/pyproject.toml
index a07d8f2..fb2921f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 requires = [
     "setuptools>=42",
     "setuptools_scm",
-    "numpy",
+    "oldest-supported-numpy",
     "Cython"
 ]
 build-backend = "setuptools.build_meta"