diff --git a/pyproject.toml b/pyproject.toml
index 9497d08..f1ac123 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,7 @@ authors = [
 dependencies = [
     "librosa>=0.10.1",
     "matplotlib>=3.7.1",
-    "numpy>=1.23.5",
+    "numpy>=1.23.5,<2",
     "pandas>=1.5.3",
     "scikit-learn>=1.2.2",
     "scipy>=1.10.1",