diff --git a/requirements.txt b/requirements.txt
index 80479aac..39b1e4b3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ pydot
 pytest
 codecov
 pep8-naming
-numpy
+numpy < 2.0.0
 PyYAML
 cython
 multiprocess