diff --git a/neurots/generate/soma.py b/neurots/generate/soma.py
index e1263406..71e82ceb 100644
--- a/neurots/generate/soma.py
+++ b/neurots/generate/soma.py
@@ -19,7 +19,7 @@
 
 import numpy as np
 from scipy.spatial import ConvexHull  # pylint: disable=no-name-in-module
-from scipy.spatial.qhull import QhullError  # pylint: disable=no-name-in-module
+from scipy.spatial import QhullError  # pylint: disable=no-name-in-module
 
 from neurots.generate import orientations
 from neurots.morphmath import rotation
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 82200fff..c6304807 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -29,10 +29,10 @@ def test_format_values():
     data = {
         "array_int": np.array([1, 2]),
         "array_float": np.array([1.1, 2.2]),
-        "array_obj": np.array(["a", [1, 2]]),
+        "array_obj": np.array(["a", [1, 2]], dtype=object),
         "2d_array_int": np.array([[1, 2]], ndmin=2),
         "2d_array_float": np.array([[1.1, 2.2]], ndmin=2),
-        "2d_array_obj": np.array([["a", [1, 2]]], ndmin=2),
+        "2d_array_obj": np.array([["a", [1, 2]]], ndmin=2, dtype=object),
         "float32": np.float32(1.1),
         "float64": np.float64(1.1),
         "int32": np.int32(1),