diff --git a/requirements.txt b/requirements.txt
index f223e1f..c3cd766 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ immutabledict
 jax
 matplotlib
 multihist
-numpy
+numpy<2.0.0
 numpyro
 pandas
 scikit-learn