diff --git a/kowalski/tools/istarmap.py b/kowalski/tools/istarmap.py
index c815e614..f7fc5f4a 100644
--- a/kowalski/tools/istarmap.py
+++ b/kowalski/tools/istarmap.py
@@ -2,6 +2,10 @@
 # See https://stackoverflow.com/questions/57354700/starmap-combined-with-tqdm
 import multiprocessing.pool as mpp
 import sys
+import numpy as np
+
+# for numpy>=1.24.0, monkey patch numpy.object
+np.object = object
 
 if sys.version_info.minor > 7: