diff --git a/pyproject.toml b/pyproject.toml
index 511c15e7..8745ed35 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ keywords = [
   "SciPy",
 ]
 dependencies = [
-  "numpy>=1.12",
+  "numpy<2",
 ]
 # dynamic = ["version"]