diff --git a/pyproject.toml b/pyproject.toml
index 8b6cd76c..61a00b37 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,8 +32,8 @@ readme = "README.rst"
 license = {file = "LICENSE"}
 requires-python = ">=3.8"
 dependencies = [
-    "scipy",
-    "numpy",
+    "scipy<2.0.0",
+    "numpy<2.0.0",
     "pandas~=2.2.0",
     "matplotlib>=3.6.1,<3.10.0",
 ]