diff --git a/requirements.txt b/requirements.txt
index 2b5b541..15206d1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ llvmlite
 numba>=0.51.2
 attrs
 frozendict
-numpy
+numpy<=1.23.5
 pandas>=1.3.5
 numexpr
 cloudpickle