diff --git a/pyproject.toml b/pyproject.toml
index b0b4ecf2d37946c9db888967ff619a0ba65dff9d..cc86975f3cde2c91f45c057b0ecb0f7359ea467c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,6 +29,7 @@
         "dask",
         "dask-ml",
         "h5py",
+        "numpy",
         "scikit-learn",
     ]